Identify the correct statement from the following

Options

A. The order of hydration enthapies of alkaline earth cations
`Be^(2+)ltMg^(2+)ltCa^(2+)ltSr^(2+)ltBa^(2+)`
B. Lithium and magnesium show some similarities in their physical properties as they are diagonally placed in periodic table
C. Lithium is softer among all alkali metals
D. Lithium chloride is deliquescent and crystallises as a hydrate, LiCl.`H_2O`

Answer

B