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What are t(2g) and e(g) orbitals?...

What are `t_(2g)` and `e_(g)` orbitals?

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In a free stransition metal ion, the five d-orbita,ls are degenerate. When it forms a complex, the degeneracy is split. Three d-orbitals having lower energy are called `t_(2g)` orbitals and the remaining two d-orbitals of higher energy are called `e_(g)` orbitals.
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On the basis of crystal field theory. Write the electronic confirguration of d^(6) in terms of t_(2g) " and " e_(g) in an octahedral field when D_(0) lt P.

In complexes off wea field ligands, Delta_(o) lt P (pairing energy), the energy difference between t_(2g) and e_(g) sets is relatively less. Under the unfluence of strong field ligands, Delta_(O) gt p (Pairing energy), the energy difference between t_(2g) and e_(g) sets is relatively high. Q. Which of the following is correct statement?

In complexes off wea field ligands, Delta_(o) lt P (pairing energy), the energy difference between t_(2g) and e_(g) sets is relatively less. Under the unfluence of strong field ligands, Delta_(O) gt p (Pairing energy), the energy difference between t_(2g) and e_(g) sets is relatively high. Q. Select the correct statement regarding [Cr(en)_(2)Cl_(2)]^(+) and [Co(C_(2)O_(4))_(2)(NH_(3))_(2)]^(-) complex ions:

CENGAGE CHEMISTRY ENGLISH-APPENDIX INORGANIC VOLUME 2-Short Answer Type
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  15. Name two complexes which are used in medicines.

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