S Block Elements Question 119

Question: Aqueous solution of a group 2 element is precipitated by adding $ Na_2CO_3, $ then this precipitate is tested on flame, no light in visible region is observed , this element can be

Options:

A) $ Ba $

B) $ Mg $

C) $ Ca $

D) $ Sr $

Show Answer

Answer:

Correct Answer: B

Solution:

[b] Electrons in Mg due to its small size are tightly bound so they cannot be excited by the flame.