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Which of the following salt does not imp...

Which of the following salt does not impart colour to the flame?

A

`KI`

B

`LiCl`

C

`CaCl_(2)`

D

`MgCl_(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
Halides of group I and II impart characteristic colour to the flame due to low IE of the central atom. However, ionization energy of Be and Mg atoms is hgih due to their small size, hence they can.t hence they can.t be excited to higher levels by Bunsen burner flame. Thus, their halides don.t impart colour to flame.
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