What are the physical and chemical properties of the atom 'actinium'?
Q. please write what site that you got the information from or don't post it at all. Thank You.
Asked by Allie - Mon Mar 26 18:43:25 2007 - - 1 Answers - 0 Comments
A. Only limited information is available about actinium. It is known to be a silver metal with a melting point of 1,050oC (1,920oF) and a boiling point estimated to be about 3,200oC (5,800oF). The element has properties similar to those of lanthanum. Generally speaking, elements in the same column in the periodic table have similar properties. Few compounds of actinium have been produced. Neither the element nor its compounds have any important uses. www.bookrags.com/research /actinium
Answered by Megan L - Mon Mar 26 18:52:32 2007
Q. please write what site that you got the information from or don't post it at all. Thank You.
Asked by Allie - Mon Mar 26 18:43:25 2007 - - 1 Answers - 0 Comments
A. Only limited information is available about actinium. It is known to be a silver metal with a melting point of 1,050oC (1,920oF) and a boiling point estimated to be about 3,200oC (5,800oF). The element has properties similar to those of lanthanum. Generally speaking, elements in the same column in the periodic table have similar properties. Few compounds of actinium have been produced. Neither the element nor its compounds have any important uses. www.bookrags.com/research /actinium
Answered by Megan L - Mon Mar 26 18:52:32 2007
Actinium as a core of a diamond?
Q. If i have a diamond, and i put an actinium in the center of the diamond, wil the diammond affected by actinium's radiation? And what will be happened? Why?
Asked by CooBees' - Fri Sep 12 02:38:50 2008 - - 1 Answers - 0 Comments
A. No, because diamond is too hard.
Answered by :) - Sat Sep 13 01:47:27 2008
Q. If i have a diamond, and i put an actinium in the center of the diamond, wil the diammond affected by actinium's radiation? And what will be happened? Why?
Asked by CooBees' - Fri Sep 12 02:38:50 2008 - - 1 Answers - 0 Comments
A. No, because diamond is too hard.
Answered by :) - Sat Sep 13 01:47:27 2008
Which element is radioactive and has one less neutron than Actinium?
Q. Which element is radioactive and has one less neutron than Actinium?
Asked by Funky Monkey - Mon Dec 8 22:57:12 2008 - - 1 Answers - 0 Comments
A. Because there is the same number of protons and no radioactive decay, it will still be Actinium, Ac, but the molar mass will be ~226 instead of 227
Answered by GeneticsMajor - Mon Dec 8 23:09:05 2008
Q. Which element is radioactive and has one less neutron than Actinium?
Asked by Funky Monkey - Mon Dec 8 22:57:12 2008 - - 1 Answers - 0 Comments
A. Because there is the same number of protons and no radioactive decay, it will still be Actinium, Ac, but the molar mass will be ~226 instead of 227
Answered by GeneticsMajor - Mon Dec 8 23:09:05 2008
I need help you guys. . . Can you help me find a nice, catchy, slogan for actinium. (Element)?
Q. I need help you guys. . . Can you help me find a nice, catchy, slogan for actinium. (Element)?
Asked by _ChrisloveT - Fri May 9 13:56:49 2008 - - 3 Answers - 0 Comments
A. It's silver, glows blue and makes your hair fall out. Try Actinium today! Don't be fooled by the pretty blue glow, it's more deadly than Uranium! WARNING: Ingesting even the smallest amount is fatal.
Answered by Mike P - Fri May 9 14:10:40 2008
Q. I need help you guys. . . Can you help me find a nice, catchy, slogan for actinium. (Element)?
Asked by _ChrisloveT - Fri May 9 13:56:49 2008 - - 3 Answers - 0 Comments
A. It's silver, glows blue and makes your hair fall out. Try Actinium today! Don't be fooled by the pretty blue glow, it's more deadly than Uranium! WARNING: Ingesting even the smallest amount is fatal.
Answered by Mike P - Fri May 9 14:10:40 2008
what are the common compounds formed by Actinium?
Q. what are the common compounds formed by Actinium?
Asked by lilvato10 - Sat Apr 1 22:21:20 2006 - - 1 Answers - 0 Comments
A.
Answered by Otts Shoals - Sat Apr 1 23:08:45 2006
Q. what are the common compounds formed by Actinium?
Asked by lilvato10 - Sat Apr 1 22:21:20 2006 - - 1 Answers - 0 Comments
A.
Answered by Otts Shoals - Sat Apr 1 23:08:45 2006
What Is the actinium for scuba?
Q. tell me pleas
Asked by sexymama - Wed Oct 1 22:04:51 2008 - - 4 Answers - 0 Comments
A. "Actinium is a silvery, radioactive, metallic element. Due to its intense radioactivity, actinium glows in the dark with a pale blue light. The chemical behavior of actinium is similar to that of the rare earth lanthanum." Not sure how this relates to Scuba at all...
Answered by Heretic - Wed Oct 1 22:20:02 2008
Q. tell me pleas
Asked by sexymama - Wed Oct 1 22:04:51 2008 - - 4 Answers - 0 Comments
A. "Actinium is a silvery, radioactive, metallic element. Due to its intense radioactivity, actinium glows in the dark with a pale blue light. The chemical behavior of actinium is similar to that of the rare earth lanthanum." Not sure how this relates to Scuba at all...
Answered by Heretic - Wed Oct 1 22:20:02 2008
What is an elemnt that has a pun relationship with Las vegas Lights?
Q. These are chemistry puns. What is Las Vegas Lights? Examples: Indian funeral chant: Indium half a dime: nickel What you do in a play: Actinium
Asked by B J - Tue May 27 18:05:53 2008 - - 1 Answers - 0 Comments
A. Neon
Answered by cavidda - Thu May 29 12:30:06 2008
Q. These are chemistry puns. What is Las Vegas Lights? Examples: Indian funeral chant: Indium half a dime: nickel What you do in a play: Actinium
Asked by B J - Tue May 27 18:05:53 2008 - - 1 Answers - 0 Comments
A. Neon
Answered by cavidda - Thu May 29 12:30:06 2008
Does Actinium react in water? how about air?
Q. Does Actinium react in water? how about air?
Asked by AS - Sat Jan 5 19:42:57 2008 - - 1 Answers - 0 Comments
A. It reacts with water to form an insoluble hydroxide and with oxygen to form the sesquioxide (A sesquioxide is an oxide containing three atoms of oxygen with two atoms (or radicals) of another element). Actinium metal tarnishes slowly in air and burns readily to form actinium (III) oxide, Ac2O3. 4Ac + 3O2 2Ac2O3 hope this helps:-)
Answered by kodie - Sat Jan 5 20:00:56 2008
Q. Does Actinium react in water? how about air?
Asked by AS - Sat Jan 5 19:42:57 2008 - - 1 Answers - 0 Comments
A. It reacts with water to form an insoluble hydroxide and with oxygen to form the sesquioxide (A sesquioxide is an oxide containing three atoms of oxygen with two atoms (or radicals) of another element). Actinium metal tarnishes slowly in air and burns readily to form actinium (III) oxide, Ac2O3. 4Ac + 3O2 2Ac2O3 hope this helps:-)
Answered by kodie - Sat Jan 5 20:00:56 2008
Is Ac - Actinium in the f block or d block?
Q. Is Ac - Actinium in the f block or d block?
Asked by Stoich - Sun May 27 01:29:11 2007 - - 7 Answers - 0 Comments
A. Actinium is a d-block element and it has one 6d electron.
Answered by manasa r - Sun May 27 02:00:24 2007
Q. Is Ac - Actinium in the f block or d block?
Asked by Stoich - Sun May 27 01:29:11 2007 - - 7 Answers - 0 Comments
A. Actinium is a d-block element and it has one 6d electron.
Answered by manasa r - Sun May 27 02:00:24 2007
i need the electric configuration for the element Actinium (Ac-89)?
Q. i have tried to figure it out and i reached an end in 5f1 ,,,and thats not possible because it ends in the B Family under the d catagory
Asked by hamzeeco - Thu Sep 21 19:23:11 2006 - - 5 Answers - 0 Comments
A. Well...you didn't go far enough...you have to ( hic ) go to the e category..and pull that sucker more than 5 feet...you must reach a minium of ( hic ) Actinium (Ac-90) then subtract 1 to arrive at Actinium (Ac-89)...also it ( hic ) does not end in the B Family... some of them got married and ( burp ) ended up in Kentucky...what the hell am I talking about?... I had it figured out before you said 5 foot... Billy Bob is 5' 1" by him self...( hic )..
Answered by Right on - Thu Sep 21 19:35:52 2006
Q. i have tried to figure it out and i reached an end in 5f1 ,,,and thats not possible because it ends in the B Family under the d catagory
Asked by hamzeeco - Thu Sep 21 19:23:11 2006 - - 5 Answers - 0 Comments
A. Well...you didn't go far enough...you have to ( hic ) go to the e category..and pull that sucker more than 5 feet...you must reach a minium of ( hic ) Actinium (Ac-90) then subtract 1 to arrive at Actinium (Ac-89)...also it ( hic ) does not end in the B Family... some of them got married and ( burp ) ended up in Kentucky...what the hell am I talking about?... I had it figured out before you said 5 foot... Billy Bob is 5' 1" by him self...( hic )..
Answered by Right on - Thu Sep 21 19:35:52 2006
Who dicovered Radioactive (actinium)?
Q. Who dicovered Radioactive (actinium)?
Asked by marcelle - Fri Dec 15 08:49:07 2006 - - 2 Answers - 0 Comments
A. Andre-Louis Debierne, more info in
Answered by Lai Yu Zeng - Fri Dec 15 09:01:09 2006
Q. Who dicovered Radioactive (actinium)?
Asked by marcelle - Fri Dec 15 08:49:07 2006 - - 2 Answers - 0 Comments
A. Andre-Louis Debierne, more info in
Answered by Lai Yu Zeng - Fri Dec 15 09:01:09 2006
If radium-226 emits a gamma ray, what is the product?
Q. A. Actinium-66 B. Thorium-230 C. Radon-222 D. Francsium-225 E. Radium-226 Need this ASAP,thank you
Asked by younghusler17 - Thu Jul 16 12:29:30 2009 - - 2 Answers - 0 Comments
A. Er, E. Gamma rays have neither mass nor charge b/c they are simply rays of energy.
Answered by Sage of Pherae - Thu Jul 16 12:35:36 2009
Q. A. Actinium-66 B. Thorium-230 C. Radon-222 D. Francsium-225 E. Radium-226 Need this ASAP,thank you
Asked by younghusler17 - Thu Jul 16 12:29:30 2009 - - 2 Answers - 0 Comments
A. Er, E. Gamma rays have neither mass nor charge b/c they are simply rays of energy.
Answered by Sage of Pherae - Thu Jul 16 12:35:36 2009
what is the answer to this question?
Q. where is actinium on the reactivity series?? i need the answer some time today plz!
Asked by Imogen - Sun Mar 15 08:26:58 2009 - - 4 Answers - 0 Comments
A. Try posting the question on chemistry forum. Hopefully, u will not get an answer on the mathematics forum.
Answered by abdullah - Sun Mar 15 08:37:33 2009
Q. where is actinium on the reactivity series?? i need the answer some time today plz!
Asked by Imogen - Sun Mar 15 08:26:58 2009 - - 4 Answers - 0 Comments
A. Try posting the question on chemistry forum. Hopefully, u will not get an answer on the mathematics forum.
Answered by abdullah - Sun Mar 15 08:37:33 2009
what is the element average atomic mass, the isotope atomic mass, and the number of neutrons?
Q. for element- actinium - aluminum - arsenic -cobalt -beryllium -californium thank you so much!!!
Asked by erie - Wed May 16 19:09:30 2007 - - 1 Answers - 0 Comments
A. You might want to bookmark this page: Subrtact the atomic number from the "isotope number" to get the number of neutrons.
Answered by Helmut - Thu May 17 16:30:00 2007
Q. for element- actinium - aluminum - arsenic -cobalt -beryllium -californium thank you so much!!!
Asked by erie - Wed May 16 19:09:30 2007 - - 1 Answers - 0 Comments
A. You might want to bookmark this page: Subrtact the atomic number from the "isotope number" to get the number of neutrons.
Answered by Helmut - Thu May 17 16:30:00 2007
what are the important uses of the following elements?
Q. 1. lanthanum 2. cerium 3. praseodymium 4. neodymium 5. promethium 6. samarium 7. europium 8. gadolinium 9. terbium 10. dysprosium 11. holmium 12. erbium 13. thulium 14. ytterbium 15. actinium 16. thorium 17. protactinium 18. uranium 19. neptunium 20. plutonium 21. americium 22. curium 23. berkelium 24. californium 25. einsteinium 26. fermium 27.mendelevium 28. nobelium > i will give tons of points on the one who could give me the best answer. kindly give me at least 3 important uses on each element
Asked by purpree17 - Fri Sep 1 12:03:26 2006 - - 3 Answers - 0 Comments
A. 1. lanthanum - x-ray intensification screens, gasoline catalysts, TV screen phosphors 2. cerium - glass polishing compound, catalyst in styrene production, prevent browning in glass 3. praseodymium - green glass, welding masks, photographic filters, tiles 4. neodymium - magnets in headphones, ceramic capacitors, blue/violet glass 5. promethium - nuclear batteries 6. samarium - magnets in headphones, tape drives 7. europium - TV screen phosphors, fluorescent bulbs 8. gadolinium - Alloys for CD's and Videodiscs, neutron absorber in control rods, garnet for bubble memories 9. terbium - Alloys for CD's, fluorescent bulbs 10. dysprosium - Alloys for CD's and Videodiscs 11. holmium - No commercial applications, although it has unusual… [cont.]
Answered by wazullah - Fri Sep 1 12:53:15 2006
Q. 1. lanthanum 2. cerium 3. praseodymium 4. neodymium 5. promethium 6. samarium 7. europium 8. gadolinium 9. terbium 10. dysprosium 11. holmium 12. erbium 13. thulium 14. ytterbium 15. actinium 16. thorium 17. protactinium 18. uranium 19. neptunium 20. plutonium 21. americium 22. curium 23. berkelium 24. californium 25. einsteinium 26. fermium 27.mendelevium 28. nobelium > i will give tons of points on the one who could give me the best answer. kindly give me at least 3 important uses on each element
Asked by purpree17 - Fri Sep 1 12:03:26 2006 - - 3 Answers - 0 Comments
A. 1. lanthanum - x-ray intensification screens, gasoline catalysts, TV screen phosphors 2. cerium - glass polishing compound, catalyst in styrene production, prevent browning in glass 3. praseodymium - green glass, welding masks, photographic filters, tiles 4. neodymium - magnets in headphones, ceramic capacitors, blue/violet glass 5. promethium - nuclear batteries 6. samarium - magnets in headphones, tape drives 7. europium - TV screen phosphors, fluorescent bulbs 8. gadolinium - Alloys for CD's and Videodiscs, neutron absorber in control rods, garnet for bubble memories 9. terbium - Alloys for CD's, fluorescent bulbs 10. dysprosium - Alloys for CD's and Videodiscs 11. holmium - No commercial applications, although it has unusual… [cont.]
Answered by wazullah - Fri Sep 1 12:53:15 2006
Obscure chemistry quiz question help please!?
Q. Half term school quiz - can't find the answer for this chemistry question: "chemically speaking, what sort of meals are made up of Tin Actinium Potassium Sulphur?" All I can find is lots of info on radioactive materials... Does anyone have any ideas please? Thanks!
Asked by Blue Rose - Tue May 26 10:40:34 2009 - - 1 Answers - 0 Comments
Q. Half term school quiz - can't find the answer for this chemistry question: "chemically speaking, what sort of meals are made up of Tin Actinium Potassium Sulphur?" All I can find is lots of info on radioactive materials... Does anyone have any ideas please? Thanks!
Asked by Blue Rose - Tue May 26 10:40:34 2009 - - 1 Answers - 0 Comments
An experiment was conducted to determine the half-life of Actininum C. After 5 minutes, 50 mg of the element?
Q. had decayed to 10.05mg. What is the half-life of Actinium C? Please help me, please show your work. Thank you a lot.
Asked by myfavoritehobbies - Sun Nov 26 19:55:10 2006 - - 1 Answers - 0 Comments
A. I just learned this in pre calc! Use this formula: P=Po*e^(kt) (Po is your original amount, k is your rate, t is your time and P is your final) 10.05=50e^(5k) SOLVE for K .201=e^(5k) take the natural log of both sides. ln.201= lne^(5k) ln.201=5k*lne (bring it to the front, log rules) (ln.201) divided by 5 equals K (lne cancels) plug (ln.201)/5 into the origianl formula: 10.05=50e^(((ln.201)/5)t) solve as previous (natural log, bring to front..) the answer is 5.
Answered by Georgina - Sun Nov 26 20:06:42 2006
Q. had decayed to 10.05mg. What is the half-life of Actinium C? Please help me, please show your work. Thank you a lot.
Asked by myfavoritehobbies - Sun Nov 26 19:55:10 2006 - - 1 Answers - 0 Comments
A. I just learned this in pre calc! Use this formula: P=Po*e^(kt) (Po is your original amount, k is your rate, t is your time and P is your final) 10.05=50e^(5k) SOLVE for K .201=e^(5k) take the natural log of both sides. ln.201= lne^(5k) ln.201=5k*lne (bring it to the front, log rules) (ln.201) divided by 5 equals K (lne cancels) plug (ln.201)/5 into the origianl formula: 10.05=50e^(((ln.201)/5)t) solve as previous (natural log, bring to front..) the answer is 5.
Answered by Georgina - Sun Nov 26 20:06:42 2006
Ok, anyone good with half-lives???
Q. ok, so me and my bff checked our answers, and we both had totally different answers. can u just PLEASE, PLEASE, PLEASE just help me with this one problem? actinium-226 has a half-life of 29 hours. if 100 mg of actinium-226 disintegrates over a period of 58 hours, how many mg of actinium-226 will remain? thank you so much for any helpful answers. oh, my answer was 50 mg. am i right?
Asked by Anonymous - Thu Nov 15 18:40:21 2007 - - 4 Answers - 0 Comments
A. simple. since it disintegrated over a period of 58 hours it has 2 halflives lets see 100/2=50 50/2=25 so 25 mg of actinium 266 is left. Tell me were u right?? :)
Answered by ~~xx{Stelth[k9]}xx~~ - Thu Nov 15 18:48:37 2007
Q. ok, so me and my bff checked our answers, and we both had totally different answers. can u just PLEASE, PLEASE, PLEASE just help me with this one problem? actinium-226 has a half-life of 29 hours. if 100 mg of actinium-226 disintegrates over a period of 58 hours, how many mg of actinium-226 will remain? thank you so much for any helpful answers. oh, my answer was 50 mg. am i right?
Asked by Anonymous - Thu Nov 15 18:40:21 2007 - - 4 Answers - 0 Comments
A. simple. since it disintegrated over a period of 58 hours it has 2 halflives lets see 100/2=50 50/2=25 so 25 mg of actinium 266 is left. Tell me were u right?? :)
Answered by ~~xx{Stelth[k9]}xx~~ - Thu Nov 15 18:48:37 2007
where are the sources of the following elements?
Q. 1. lanthanum 2. cerium 3. praseodymium 4. neodymium 5. promethium 6. samarium 7. europium 8. gadolinium 9. terbium 10. dysprosium 11. holmium 12. erbium 13. thulium 14. ytterbium 15. actinium 16. thorium 17. protactinium 18. uranium 19. neptunium 20. plutonium 21. americium 22. curium 23. berkelium 24. californium 25. einsteinium 26. fermium 27.mendelevium 28. nobelium
Asked by purpree17 - Fri Sep 1 21:02:37 2006 - - 2 Answers - 0 Comments
A. I believe these are all "rare earth" elements and are found in minerals in the earth. See
Answered by gp4rts - Sat Sep 2 03:01:46 2006
Q. 1. lanthanum 2. cerium 3. praseodymium 4. neodymium 5. promethium 6. samarium 7. europium 8. gadolinium 9. terbium 10. dysprosium 11. holmium 12. erbium 13. thulium 14. ytterbium 15. actinium 16. thorium 17. protactinium 18. uranium 19. neptunium 20. plutonium 21. americium 22. curium 23. berkelium 24. californium 25. einsteinium 26. fermium 27.mendelevium 28. nobelium
Asked by purpree17 - Fri Sep 1 21:02:37 2006 - - 2 Answers - 0 Comments
A. I believe these are all "rare earth" elements and are found in minerals in the earth. See
Answered by gp4rts - Sat Sep 2 03:01:46 2006
Oxygen, anyone? I can't breathe?
Q. What is the strangest stories you have heard about oxygen, actinium, and chromium. The first one to answer all three gets the best answer.
Asked by Immortal Syther - Fri Jan 19 19:30:52 2007 - - 1 Answers - 0 Comments
A. I ve heard the liquid oxygen is pale blue and that it is drawn to a magnet. That s pretty weird. My wife had to figure out why a particular Chrome plating tank was doing so much better than three others. She tried all sorts of analysis couldn t figure it out. Until one day she was talking to the Supervisor during the lunch break. While they spoke, she watched an Operator through his lunch bag in the good tank (he liked to watch it dissolve in the dilute sulfuric acid). She had him trash the other tanks in a similar way the next day problem solved. That was weird. Actinium is harder being that it is radio active and so rare. But I find one entry in my Hawley s Chemical Dictionary weird. It lists hazard: radio active bone-seeki [cont.]
Answered by James H - Fri Jan 19 21:06:31 2007
Q. What is the strangest stories you have heard about oxygen, actinium, and chromium. The first one to answer all three gets the best answer.
Asked by Immortal Syther - Fri Jan 19 19:30:52 2007 - - 1 Answers - 0 Comments
A. I ve heard the liquid oxygen is pale blue and that it is drawn to a magnet. That s pretty weird. My wife had to figure out why a particular Chrome plating tank was doing so much better than three others. She tried all sorts of analysis couldn t figure it out. Until one day she was talking to the Supervisor during the lunch break. While they spoke, she watched an Operator through his lunch bag in the good tank (he liked to watch it dissolve in the dilute sulfuric acid). She had him trash the other tanks in a similar way the next day problem solved. That was weird. Actinium is harder being that it is radio active and so rare. But I find one entry in my Hawley s Chemical Dictionary weird. It lists hazard: radio active bone-seeki [cont.]
Answered by James H - Fri Jan 19 21:06:31 2007
From Yahoo Answer Search: 'Actinium'
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An overview of the chemical element . actinium. . Its history, properties and uses.
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