Analytical Chemistry Question 147
Question: Which gives violet coloured bead in borax bead test
[BHU 1988; MP PET 1997]
Options:
A) $ F{e^{2+}} $
B) $ N{i^{2+}} $
C) $ C{o^{2+}} $
D) $ M{n^{2+}} $
Show Answer
Answer:
Correct Answer: D
Solution:
As $ M{n^{+2}} $ has all its electrons (5) unpaired in its d-orbital, so its extra stable configuration requires high excitation energy and so it gives violet colour.
BETA
