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![[Post New]](/templates/default/images/icon_minipost_new.gif) 4 Jan 2007 17:57:20 IST
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can you plzz tell me which formula i am supposed to use in this particular question. find the ratio of radii of hydrogen atom to that of dueterium atom.
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4 Jan 2007 20:22:18 IST
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use the Bhor's theory of Hydrogen atom acoording to which Radii of stationaty orbits is given by r n = (  0 h2 /  m e2) n2/ Z meter = (0.53 x 10-10) n2/Z Where Z is no. of protons in the nuclei. Total no. of neucleons = 2 for deuterium, but Z = 1 and nucleon in hydrogen atom = 1, also Z = 1 for hydrogen atom.
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The Scientist does not study nature because it is useful; he studies it because he delights in it, & he delights in it because it is beautiful. If nature were not beautiful, it would not be worth knowing, life would not be worth living. Ofcourse I do not here speak of that beauty that strikes the senses, the beauty of qualities & appearances; not that I undervalue such beauty, far from it, but it has nothing to do with science; I mean that profounder beauty which comes from the harmoniuos order of the parts, & which a pure intelligence can grasp. |
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5 Jan 2007 17:01:59 IST
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hydrogen and dueterium are isotopes so the value of Z will be same for these two.isn't it? also can i use the formula of rutherford's model i.e R = 1.33 * 10-13A1/3
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5 Jan 2007 21:30:18 IST
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Exactly, I have rectified the same. Thank You very much
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The Scientist does not study nature because it is useful; he studies it because he delights in it, & he delights in it because it is beautiful. If nature were not beautiful, it would not be worth knowing, life would not be worth living. Ofcourse I do not here speak of that beauty that strikes the senses, the beauty of qualities & appearances; not that I undervalue such beauty, far from it, but it has nothing to do with science; I mean that profounder beauty which comes from the harmoniuos order of the parts, & which a pure intelligence can grasp. |
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6 Jan 2007 12:22:01 IST
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but sir, what's the answer? 1:1 or 1:2  2 |
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6 Jan 2007 21:22:43 IST
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The answer should be 1:1.
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The Scientist does not study nature because it is useful; he studies it because he delights in it, & he delights in it because it is beautiful. If nature were not beautiful, it would not be worth knowing, life would not be worth living. Ofcourse I do not here speak of that beauty that strikes the senses, the beauty of qualities & appearances; not that I undervalue such beauty, far from it, but it has nothing to do with science; I mean that profounder beauty which comes from the harmoniuos order of the parts, & which a pure intelligence can grasp. |
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8 Jan 2007 11:22:56 IST
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thankyou.
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10 Jan 2007 20:15:40 IST
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the answer is not 1:1 as the atomic masses of H and D are not same.(apply rutherfords formulae).if iam wrong then plz correct me.
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11 Jan 2007 11:57:57 IST
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| | | | can you plzz tell me which formula i am supposed to use in this particular question. find the ratio of radii of hydrogen atom to that of dueterium atom. |
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22 Jan 2007 00:42:35 IST
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a formulAE IS NOT GOING TO apply there u have to start from the basics as ratio for atm radii in cases of isotopes the one having the more no of nucleons will have the larger radii and in case of same comp but diff E confi as cuin d9 and d10 the confi which is more stable will have the larger radii
if for any further confusions mail me gagar.iitk@gmail.com
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22 Jan 2007 17:16:47 IST
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this question's from bahadur(obj.).the answer here is given as 1:1.but i just want to ask one question why can't we use rutherford's formula?it's damn confusing.someone plz... reply!
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22 Jan 2007 18:13:43 IST
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Hiii, It's simple. Remember for the same orbit, all isotopes have the same radius. So, dueterium and hydrogen have the same radii for the same orbit. This can also be shown from the formula So, cheers !!!!!!!!!!!!!!!!!!!!!!!!!!!
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You never know what is enough till you know what is more than enough.
Titun |
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23 Jan 2007 17:40:17 IST
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if we use r=1.33*10-13A1/3,then we get the answer 1/22
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26 Jan 2007 12:06:35 IST
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hi! I would like an expert preferably edison to clarify my doubt.if u want me to send this as a separate question,then let me know.
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26 Jan 2007 12:21:42 IST
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