Given a rock which has a mass of 20 grams and displaces 5 ml of water, what is its volume?
a: 4 ml
b: 5 ml
c: 100 ml
d: not enough information

Nonmetals usually react by gaining electrons

The teacher is mostly talking about the distillation of a mixture

Sorry i dont understand the question can you rephase it?

☆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