Which forms interstitial compounds?
$Fe$
$Co$
$Ni$
All
Which one of the following species is stable in aqueous solution ?
A compound of a metal ion $M^{x+}$ $(Z = 24)$ has a spin only magnetic moment of $\sqrt {15}$ Bohr Magnetons. The number of unpaired electrons in the compound are
An ornamental of gold having $75\%$ of gold, it is of .............. carat.
The magnetic moment of a metal ion of first transition series is $2.83 $ $BM$. Therefore it will have unpaired electrons
'Spin only' magnetic moment is same for which of the following ions?
$A$. $\mathrm{Ti}^{3+}$ $B$. $\mathrm{Cr}^{2+}$ $C$. $\mathrm{Mn}^{2+}$ $D$.$\mathrm{Fe}^{2+}$ $E$. $\mathrm{Sc}^{3+}$
Choose the most appropriate answer from the options given below.