Question

What is a radical? a group of atoms that act like one atom a group of ions that have no charge a group of ions that break up during a reaction a group of atoms that give off radiation

Answer 1

Correct it is You are right and should have no bother explaining it again

Answer 2

it is the group of atoms that act like one atom in most of the reactions ..
it is ion or atom or molecule having at least one unpaired electron ..