Which of the following pair will have effective magnetic moment equal
$C{r^{ + 3}}$ and $M{n^{ + 2}}$
$C{r^{ + 2}}$ and $F{e^{ + 2}}$
${V^{ + 2}}$ and $S{c^{ + 3}}$
$T{i^{ + 2}}$ and ${V^{ + 2}}$
Metal used for making joints in jewellery is
The transition metals exhibit higher enthalpies of atomisation due to
A copper salt is isomorphic with $ZnS{O_4}$, the salt will be
Which of the following may be colourless
Iron becomes passive by ..................... due to formation of .....................