Those elements impart colour to the flame
Question:

Those elements impart colour to the flame on heating in it, the atoms of which

require low energy for the ionisation (i.e., absorb energy in the visible region

of the spectrum). The elements of which of the following groups will impart colour

to the flame?

(i) 2

(ii) 13

(iii) 1

(iv) 17

Solution:

Option (i) and (iii) are the answers.

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