s-BLOCK ELEMENTS

Physical properties of alkali metals. S.NO. Physical properties Alkali metal 1. Density i] All are light metals. ii] Density increases down the group but K is lighter than Na. Order = LiNa>K>Rb>Cs B.P = Li>Na>K>Cs>Rb 4. Specific heat It decreases from Li to Cs. Li>Na>K>Rb>Cs