What is the charge of an electron? A-negative
B-neutral
C-positive
D-none of these

The answer is D-negative because protons are positive and neutrons are neutral

☆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