Question

When carbon forms four covalent bonds with hydrogen in methane, it attains the configuration of ---------.

neon

argon

radon

helium

​

Answer 1

Answer:

The electronic configuration of C is 1s

2

2s

2

2p

2

,

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 1s

2

2s

2

2p

6

which is the electronic configuration of inert gas neon.