D-And F-Block Elements Ques 181

Question: Cuprous ion is colourless, while cupric ion is coloured because

[EAMCET 1992; BHU 2002]

Options:

A) Both have unpaired electrons in d -orbital

B) Cuprous ion has a completed d -orbital and cupric ion has an incomplete d -orbital

C) Both have half-filled p and d -orbitals

D) Cuprous ion has incomplete d -orbital and cupric ion has a completed d -orbital

Show Answer

Answer:

Correct Answer: B

Solution:

Cuprous ion (Cu+) 3d10 Completely filled d sub shell Cupric ion Cu+2 One unpaired electron

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