

MCQOPTIONS
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1. |
Atomic number of Cr and Fe are 24 and 26 respectively. Which of the following is paramagnetic with the spin of electron [CBSE PMT 2002] |
A. | \[{{[Cr{{(N{{H}_{3}})}_{6}}]}^{+3}}\] |
B. | \[[Fe{{(CO)}_{5}}]\] |
C. | \[{{[Fe{{(CN)}_{6}}]}^{-4}}\] |
D. | \[[Cr{{(CO)}_{6}}]\] |
Answer» B. \[[Fe{{(CO)}_{5}}]\] | |