Question

Explain the formation of H₂ molecule on the basis of valence bond theory.

Answer 1

H2 Is a first known element - meant to be stable it  always shares its electron with other Hydrogen  this is known as "covalent bond between Hydrogen element"  

H - H ==> H2  

since each hydrogen have 1 electron in its outermost shell to complete its deplete these hydrogen will share there electron and will be stable

Answer 2

Answer:

The electronic configuration of hydrogen is 1s^1 .  

Thus, it contains one unpaired electron in 1s orbital.  

Two H atoms, each having one unpaired electron, combine and share their electron to form a covalent bond in which two electrons are paired.  

H⋅+H⋅→H⋅⋅H