One word answers are given for the following, Mark the example which is not correct.

Options

A. Alkali metals with lowest melting point- Cs
B. Alkaline earth metal with higher hydration ethalpy- `Ba^(2+)`
C. Alkaline earth metal which imparts brick red colour to the flame-`Ca^(2+)`
D. Oxide of alkaline earth metal which is amphoteric in nature -BeO

Answer

B

Explanation

Hydration enthalpy decreases with increases in ionic size down the group. `Be^(2+) gt Mg^(2+) gt Ca^(2+) gt Sr^(2+) gt Ba^(2+)`