Why first ionisation enthalpy of $Cr$ is lower than that of $Zn$ ?
The number of unpaired electrons in ferrous ion is
Amongst $TiF_6^{2-}$ , $CoF_6^{3-}$ , $Cu_2Cl_2$ and $NiCl_4^{2-}$ the colourless species are
Which of the following element has maximum first ionisation potential
Which of the following alloys contain only $Cu $ and $Zn$
Consider the hydrated ions of $Ti^{2+}, V^{2+}, Ti^{3+}$ and $Sc^{3+}$. The correct order of their spin-only magnetic moments is