The metal ion having maximum paramagnetic behaviour among the first transition series elements is,

The correct electronic configuration of the element $Au$ is

The decrease in atomic volume from $Cr$ to $Cu$ in the $3d$ series is very negligible because:

The outermost shell electronic configuration of a transition element is:

Given below are two statements:
Statement $I$: Ferromagnetism is considered as an extreme form of paramagnetism.
Statement $II$: The number of unpaired electrons in a $Cr^{2+}$ ion $(Z=24)$ is the same as that of a $Nd^{3+}$ ion $(Z=60)$.
In the light of the above statements,choose the correct answer from the options given below:

Which of the following compounds is expected to be coloured?