Generally, as you go from left to right on the periodic table, what happens to:
a) atomic radius?
b) first ionization energy?
c) electronegativity?

b. first ionization energy

Explanation:

Therefore, moving left to right across a period the nucleus has a greater pull on the outer electrons and the atomic radii decreases. Moving down a group in the periodic table, the number of filled electron shells increases. ... Therefore, the positive nucleus pulls the electrons tighter and the radius is smaller.

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.