Question

Why do the two electrons spend their time equally between both hydrogen atoms? In other words, why can’t one hydrogen just take the other’s electron?

Answer 1

• There is a single bond present between Hydrogen and hydrogen.
• Hydrogen has valency 1
• So inorder to complete octet both electrons share 1 electrons.
• So they has restriction only to acquire covalent bonded electron not others

Answer 2

Because it is a covalent bond meaning that they share the electrons to achieve full valence.