Question

Why does methane have 4×C−H bonds?

Answer 1

Answer: In order to attain stable noble gas electronic configuration.

Explanation: See, every atom have tendency to attain stable electronic configuration. So C have electronic configuration 2s2 2p2 requires 4 more electron thus shares electron with H and achieves stable configuration.

H have electronic configuration 1s1 requires 1e- to attain nearest noble gas configuration (He- 1s2)