Which of the following is correct ?

Options

A. All alkali earth metal salts impart a characteristic colour to Bunsen flame.
B. `CsOH` is most soluble hydroxide among `LiOh, KOH, RbOH` and `CsOH`.
C. Amoung the alkali metals `Li` is most reactive under all the conditions.
D. The reducing character of the alkali metal hydrides following order:
`LiH gt NaH gt KH gt RbH gt CsH`

Answer

B

Explanation

(A) Be & mg don’t give flame test.
(C ) lonisation energy and melthing point of `Li` are higher.
(D) Correct reducing character order is:
`CsH gt RbH gt KH gt NaH gt LiH`