Question

Hydrogen molecule shares ________ pairs of electron​

Answer 1

Answer:

one

Explanation:

The hydrogen atom has only one electron, which is its valence electron. It can only share what it has, which is a single electron.

Hydrogen, the only element in the first row besides Helium, fulfills the “octet rule” by sharing two electrons only. Two hydrogen atoms form a covalent bond to make a hydrogen molecule. Each contributes one electron and forms a system that is much more stable than the isolated atoms.

Answer 2

Answer:

They share two electrons in the covalent bond, and each acquires a helium-like electron configuration.