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13 Jun 2009 18:59:12 IST
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in methene where is double bond ???????/
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13 Jun 2009 19:01:58 IST
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there is nothing called as methene. how cam there be a double bond in something where there is just one carbon. the simplest hydrocarbon containing double bond is ethene.
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13 Jun 2009 19:03:21 IST
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but it's given in NCERT
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13 Jun 2009 19:05:59 IST
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There no doble bond in methane check again.....
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14 Jun 2009 17:39:17 IST
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see page 377 ncert class 11
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14 Jun 2009 17:42:01 IST
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arey u will find some mistakes in ncert books too...there is nothing lyk methene..another mistake u will find in the topic dehrdrohalogenation of alkyl halides class 12 book..
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15 Jun 2009 13:32:45 IST
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experts help required
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15 Jun 2009 13:40:34 IST
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ha ha ha ah methene....lolz
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15 Jun 2009 13:41:00 IST
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Methene is nothing but methylene radical. (Methene was the former name.) :CH2 radical. ..no double bonds here. example : methylene bromide : CH2Br2. Am not having ncert rite now ..so cant chk...(btw whats so funny here ?) The End.
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Everyone's Stupid. |
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dude, read that full sentence. It may be remembered that first member of alkene series is: CH2 (replacing n by 1 in CnH2n) known as methene but has a very short life. Carbon has valency 4 and hydrogen 1. So, this is not stable. So, we start the alkene series form stable member i.e. ethene CH2=CH2. Methylene radical is the bivalent radical CH2 derived from methane.
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15 Jun 2009 13:56:46 IST
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dude, read that full sentence. It may be remembered that first member of alkene series is: CH2 (replacing n by 1 in CnH2n) known as methene but has a very short life. Carbon has valency 4 and hydrogen 1. So, this is not stable. So, we start the alkene series form stable member i.e. ethene CH2=CH2. Methylene radical is the bivalent radical CH2 derived from methane.
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15 Jun 2009 13:58:49 IST
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o thnk god deepak..u gav d ryt answer else DJ was going paranoid wid dis methene issue
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16 Jun 2009 18:51:17 IST
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methene does not exist as c-h double bond cannot exist(only 1 electron in hydrogen).
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