Q.

Which of the following general configuration of outermost shell represents Chromium element [Cr's atomic number = 24]?

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a

d3s2

b

d6s0

c

d4s2

d

d5s1

answer is D.

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This configuration is more stable because of symmetrical distribution of e- and exchange energy.

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Which of the following general configuration of outermost shell represents Chromium element [Cr's atomic number = 24]?