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
  1. helium
  2. neon
  3. argon
  4. krypton

AcademicChemistryNCERTClass 10

Correct Answer: (b) neon

Explanation: Electronic configuration of carbon (C) = 2, 4 when it forms four covalent bonds by sharing its four valence electrons with hydrogen, it forms CH4.

Hence, the electronic configuration of C in CH4 = 2, 8.

The atomic number of Ne is 10. Its electronic K L configuration is 2,8. Therefore, after the formation of four bonds, carbon attains the electronic configuration of neon. 

raja
Updated on 10-Oct-2022 12:47:26

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