Which pair of the following chlorides do not impart colour to the flam

1.	Which pair of the following chlorides do not impart colour to the flame ?
Answer» `BeCl_(2) and SrCl_(2)` `BeCl_(2) and MgCl_(2)` `CaCl_(2) and BaCl_(2)` `BaCl_(2) and SrCl_(2)` Solution :`BeCl_(2)` and `MgCl_(2)` do not IMPACT colour to the flame due to their HIGH IONIZATION enthalpies .

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