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![[Post New]](/templates/default/images/icon_minipost_new.gif) 14 Apr 2007 12:09:22 IST
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Which of the following will react most vigorously with water? a)Li b)Na c)K d)Rb Please answer with expalnation.
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14 Apr 2007 12:13:55 IST
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i think its b) as Na is more reactive than K,Rb&Li give rattings
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14 Apr 2007 12:18:11 IST
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how. i dont think its the right answer
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14 Apr 2007 12:31:47 IST
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is it (D) ??
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14 Apr 2007 12:41:04 IST
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It is Lithium since it has the highest value of hydration energy which in turn is a measure of it's ability to undergo dissociation when placed in water.
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14 Apr 2007 12:43:57 IST
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small size means greater charge density and hence more of interactions....so Li should react more viogrously !
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14 Apr 2007 12:49:13 IST
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according to the reactivity series, the answer should be c) K.
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14 Apr 2007 13:31:33 IST
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the answer is c.
potassium's melting point is very low . so when put in water it melts and spreads over the surface . this thin layer due to the heat eveolvesd catches fire .
thus k reacts most violently with water
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khud hi ko kar buland itna ki khuda bhi tujhse puche ...bol bande , teri raza kya hai |
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14 Apr 2007 13:32:49 IST
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rate me if u r satisfied with the anser
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khud hi ko kar buland itna ki khuda bhi tujhse puche ...bol bande , teri raza kya hai |
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18 Apr 2007 20:22:58 IST
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what is the answer of your question?????????????????????
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19 Apr 2007 01:29:32 IST
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well the answer is rubidium fr sure.
becasue the reactivity of alkali metals towards water increases down the group as their electropositive charactr increases.
i know i am right.
so plz rate me.
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19 Apr 2007 02:19:41 IST
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the ans is (d) ....,,,, because reactivity of alkali metals with water increases down the group .
Plzz rate....................
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19 Apr 2007 08:27:13 IST
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aanswer is potassium for 100% sure
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19 Apr 2007 09:31:03 IST
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poatssium for sure . read the explaination given
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khud hi ko kar buland itna ki khuda bhi tujhse puche ...bol bande , teri raza kya hai |
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19 Apr 2007 10:00:12 IST
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The answer is pottassium as its polarizing power and ability to form H bonds is more.Dont ask phusical questions in organic.Plzzzzzzzzzzzzzzzzzzzzz
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