Which of the following changes is observed when we move across the row from left to right in the periodic table? Atomic radius increases

Atomic radius decreases

Number of protons decreases

Chemical reactivity of metals increases

☆ionisation energy increases across a period from na -> ar☆ionisation energy decreases down a group from li -> fr☆ionic radius decreases across a period from na -> cl☆ionic radius increases down a groupfrom f -> ii hope it clarifies your doubts