Prove the formula p=h*d*g

Mgo2 is the oxidation state of manganese oxide

What’s the solution?

No. an alpha particle is a pair of protons and a pair of neutrons, i.e. a helium

☆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