Based on the HONC rule, means H makes 1 bond O makes 2 bonds N makes 3 bonds and C makes 4 bonds, the covalent bonds form around hydrogen and halogens is a total of 1 bonds in total. The answer in this question is 1 bond. Only 1 covalent bond is form around hydrogen and halogens, according to the HONC 1234 rule.
