Question

Flame test is not given by:

• A. Ca
• B. Ba
• C. Mg
• D. Li

Answer 1

Answer: (C)

In group $IIA$, $Be$ and $Mg$ do not impart colour to flame. Their electrons being strongly bonded do not get excited at the temperature of the bunsen flame. Other elements give colour with flame. $\underset{\text{Crimson red}}{\mathrm{Li}}\underset{\text{Apple green}}{\mathrm{Ba}}\underset{\text{Brick red}}{\mathrm{Ca}}$