The metal ion which does not form coloured compound is
Chromium
Manganese
Zinc
Iron
Which of the following compounds is not colored yellow ?
Which of the following has highest ionic radii
Why $\mathrm{E}^{\circ}$ values for $\mathrm{Mn}, \mathrm{Ni}$ and $\mathrm{Zn}$ are more negative than expected?
Which of the following species is expected to show the highest magnetic moment? (At. Nos.: $Cr=24$, $Mn = 25$, $Co = 27$, $Ni = 28$, $Cu = 29)$
Which is not amphoteric