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(C) Transition metals exhibit variable oxidation states because the energy difference between the $(n - 1) \, d$ orbitals and the $ns$ orbitals is ver

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$ns$ and $(n - 1) \, d$ only but not $np$

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(C) Transition metals exhibit variable oxidation states because the energy difference between the $(n - 1) \, d$ orbitals and the $ns$ orbitals is very small. Due to this small energy gap,electrons from both the $(n - 1) \, d$ subshell and the $ns$ subshell can participate in bond formation. Therefore,both $ns$ and $(n - 1) \, d$ electrons are involved in exhibiting variable oxidation states.

$E^{\Theta }$	$V$	$Cr$	$Mn$	$Fe$	$Co$	$Ni$	$Cu$
$(M^{2+}/M)$	$-1.18$	$-0.91$	$-1.18$	$-0.44$	$-0.28$	$-0.25$	$+0.35$

The electrons which take part in order to exhibit variable oxidation states by transition metals are

Similar Questions

For the first row transition metals,the $E^{\Theta }$ values are:

$E^{\Theta }$ $V$ $Cr$ $Mn$ $Fe$ $Co$ $Ni$ $Cu$

$(M^{2+}/M)$ $-1.18$ $-0.91$ $-1.18$ $-0.44$ $-0.28$ $-0.25$ $+0.35$

Explain the irregularity in the above values.

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