Ionic Radius

Question 1

what is the definition

Answer 1

There are two kinds of ionic radius
Cations - positive ion - the atomic structure will have more protons than electrons
Radius is smaller - greater pull on protons than electrons

Anions - negative ion - the atomic structure will have more electrons than protons
Radius is larger - weaker pull from the protons on the electrons. More repulsive forces between electrons if there is more than one orbit

Question 2

the trend going left to right

Answer 2

large to small

Question 3

the trend going top to bottom

Answer 3

small to large