The NA+ ion has less electrons and therefore, the positive charge on Na+ is greater, pulling the electrons closer to the nucleus. Therefore, if the electrons move closer to the nucleus the radius will decrease.
Not only this, but the Na ion also drops a valence level because it only has one electron on its outer valence level. Therefore, another solution is that if the valence level drops, the radius drops as well
Hope this helped!!:D
C is the answer because it had a change in properties meaning chemical change
Explanation:
When we add chlorine to a substance or compound then this process is known as chlorination.
For example, a process of chlorination is as follows.
Initiation :
where, Cl* is a free radical.
Propagation:
Termination:
Thus, we can conclude that out of the given options is not formed through a termination reaction in the chlorination of methane.