Who arranged the elements according to atomic mass, and used the arrangement to predict the properties of missing elements. a john dalton
b henry mosely
c dmitri mendeleev
d antoine lavoisier

100%sorry if i’m wronghope this good luck: )

☆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