4

Question 1

Heterolytic fission

Answer 1

When a covalent bond breaks, one bonding atom receives both electrons from the bonded pair

Question 2

Homolytic fission

Answer 2

When a covalent bond breaks, each bonding atom receives one electron from the bonding pair,forming 2 radicals

Question 3

Structural isomers

Answer 3

Compounds with the same molecular formula but different structural formulae