Question

Periodic trends vary as we move across the periodic table. In general, as you move across a row in the periodic table A) ionic size increases. B) atomic radius decreases. C) nuclear charge decreases. D) ionization energy decreases.

Answer 1

In general, as you move across a row in the periodic table, B. atomic radius decreases.
This is because there is a stronger attraction between outermost electrons and nucleus, which is why the radius between them becomes smaller. 

Answer 2

Generally, as one move across a row in the periodic table, atomic radius decreases. The correct option is B.