Which of the following is not correct about transition metals
Their melting and boiling points are high
Their compounds are generally coloured
They can form ionic or covalent compounds
They do not exhibit variable valency
Which of the following ions has the maximum magnetic moment
Which have melting point below $500\,^{\circ} C$.
Cuprous ion is colourless while cupric ion is coloured because
Which of the will not form an amalgam
Spin only magnetic moment of $\left[ MnBr _{6}\right]^{4-}$ is $.....\,B.M.$ (round off to the closest integer)