Answer:
O2 has a double covalent bond
H2 has a single covalent bond
N2 has a triple covalent bond
Explanation:
Hydrogen atoms form only one covalent bond because they have only one valence electron to pair.
Since two electrons form each bond, there are a total of two pairs, or four electrons, in the bond.
The N2 Lewis structure has a triple bond between two nitrogen atoms. According to the octet rule, nitrogen atoms need to bond three times.
