What can affect the properties of a substance?
O only the types of atoms
O only the arrangement of atoms
the arrangement and types of atoms
Oneither the arrangement nor the types of atoms

☆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