Question

The least abundant alkaline earth elements is
a) Barium
b) Radium
c) Magnesium
d) Lithium

Answer 1

Radium the least abundant alkaline earth element

Answer 2

Dear Shabana,

◆ Answer -

The least abundant alkaline earth elements is *Radium*.

◆ Explaination -

- Group 2 elements are mostly found in earth's crust & thus are called alkaline earth metals.

- These are very reactive & thus are found as salts not as free metals.

- Alkaline earth metals in descending order of their abundance are given by -

Ca > Mg > Be > Sr > Ba > Ra

Hope this helped you. Thanks for asking..