The density of a gas is inversely proportional to its molar mass.
True or false?

D. most models represent a real world object in a simpler way

What is the question

☆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