The line spectrum of two elements are not identical because : a) the elements do not have same no. of neutrons. b) they have different mass no. c) outermost electrons are at different energy levels. d)They have different electronic configuration. Tick the correct answer along with explanation. I am asking this because I cannot solve it.
Asked by Om Prakash Arya | 3rd Feb, 2014, 11:58: PM
Option (C): Outermost electrons are at different enegy levels.
Answered by | 4th Feb, 2014, 10:48: AM
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