Question

How many of the following metal chlorides impart characteristic colour to the lower oxidising flame?
LiCl, NaCl, KCl, `BeCl_(2), MgCl_(2), CaCl_(2), SrCl_(2), BaCl_(2)`

Answer 1

Correct Answer - 3
Be and Mg have very high I.E. Hence do not impart colour to the flame. `Ca^(2+),Sr^(2+),Ba^(2+)` less volatile and impart colour to the flame in fusion zone.