On heating 5.0g of a fresh sample of X to constant mass,1.80g was lost in the form of water vapour . Calculate the number of water molecules or water of crystallization in one molecule (H=1,O=16,an hydros form of X =160g)m

☆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

The correct answer is:   bri hope this answer was ! : )

Self-ionizes to form an equilibruium system in which [ h_{3} o^{+} ]=[ oh^{-} ]=10^{-7} m