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‘ The colour of the emitted light depends upon the difference of energy between ground & the exicited states of the electron in the atom / ion ‘ Then why there is different colors formed when a particular metals or its salts heated to give particular color. Eg. Lithum – Crimson red , Sodium – Golden yellow etc.

‘The colour of the emitted light depends upon the difference of energy between ground & the exicited states of the electron in the atom / ion ‘
Then why there is different colors formed when a particular metals or its salts heated to give particular color.
Eg. Lithum – Crimson red , Sodium – Golden yellow etc.

Grade:11

1 Answers

Gaurav
askIITians Faculty 164 Points
9 years ago
Hello Student
The colour of flame depends on the amount of energy released when the electron jumps back to the ground level from the exited state which in turn depends on the energy difference between the two states.
The colour produced in different metals is different because their atomic radii differ due to which the effective nuclear charge in the electron also differ. As a result amount of energy required or released during the transition also varies which results in different colours of flame.

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