How can a standard curve be used to determine the concentration of a solution?

I’m not sure what your trying to say here.. can you clarify again?

The metal is named first

☆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