The valency of hydrogen is 1 and valency of carbon is 4. What is the maximum number of hydrogen atoms required to attain the octet configuration by the carbon?

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Solution

The correct option is B
4

The valence electron of hydrogen is 1 and valence electron of carbon is 4. Thus hydrogen will require 2 electrons to attain complete outer-most orbital. Thus carbon will share one of its electrons with hydrogen. But still there are 3 more un-shared electrons left out with carbon. So, It can make bond with 3 other hydrogen atoms. Thus one carbon can accept maximum of 4 hydrogen atoms

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Question 21
Carbon forms four covalent bonds by sharing its four valence electrons with four univalent atoms, e.g. hydrogen. After the formation of four bonds, carbon attains the electronic configuration of
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(b) neon
(c) argon
(d) krypton

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