Question

what happens to atomic radius as you move from left to right across a period? radius remains constant radius increases consistently radius fluctuates randomly radius decreases gradually

Explanation:

As you move from left - to - right across a period in the periodic table, the number of protons in the nucleus increases while the electrons are added to the same energy level. The increased nuclear charge pulls the electrons closer, causing the atomic radius to decrease gradually.

Answer:

Radius decreases gradually