A transition metal ' $\mathrm{M}$ ' among $\mathrm{Sc}, \mathrm{Ti}, \mathrm{V}, \mathrm{Cr}, \mathrm{Mn}$ and $\mathrm{Fe}$ has the highest second ionisation enthalpy. The spin only magnetic moment value of $\mathrm{M}^{+}$ion is. . . . . . .$\mathrm{BM}$ (Near integer)
(Given atomic number $\mathrm{Sc}: 21, \mathrm{Ti}: 22, \mathrm{~V}: 23, \mathrm{Cr}$ : $24, \mathrm{Mn}: 25, \mathrm{Fe}: 26)$
$5$
$6$
$9$
$10$
The atomic radii from $Cr$ to $Cu$ is almost identical because of
Which of the following does not contain copper
Which one of the following does not correctly represent the correct order of the property indicated against it?
The magnetic moment of a metal ion of first transition series is $2.83 $ $BM$. Therefore it will have unpaired electrons
Which forms interstitial compounds?