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Question

Draw the electron-dot structure of a hydrogen chloride molecule:
(i) Which inert gas does the H atom in HCl resemble in electron arrangement?
(ii) Which inert gas does the Cl atom in HCl resemble in electron arrangement?


Solution

The electron-dot structure of a hydrogen chloride molecule is:
              
It is formed by sharing one electron by the hydrogen and chlorine atoms.

(i) The H atom in HCl resembles helium gas in its electron arrangement by sharing one electron with the chlorine atom to get two electrons in its outermost shell.

(ii) The Cl atom in HCl resembles argon gas in its electron arrangement by sharing one electron with the hydrogen atom to get eight electrons in its outermost shell. Its electronic configuration becomes 2, 8, 8.

Science
Lakhmir Chemistry 2013
Standard X

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