NEET UG 2002 — Inorganic Chemistry

Atomic number of $\mathrm{Cr}$ and $\mathrm{Fe}$ are respectively 24 and 26 , which of the following is paramagnetic?

General electronic configuration of lanthanides is:

Which of the following order is wrong?

The hypothetical complex chlorodiaquatriammine cobalt (III) chloride can be represented as:

Which of the following shows maximum number of oxidation states?

$\mathrm{Zn}$ gives $\mathrm{H}_2$ gas with $\mathrm{H}_2 \mathrm{SO}_4$ and $\mathrm{HCl}$ but not with $\mathrm{HNO}_3$ because:

An atom has electronic configuration $1 s^2$ $2 p^6 3 s^2 3 p^6 3 d^3 4 s^2$, in which group it will be placed?

In $\mathrm{NO}_3^{-}$ion, number of the bond pair and the lone pair of electrons on nitrogen atom are:

Which of the following has the $p \pi-d \pi$ bonding?

In the borax bead test, which compound is formed?

In the silver plating of copper, $\mathrm{K}\left[\mathrm{Ag}\left(\mathrm{CN}_2\right]\right.$ is used instead of $\mathrm{AgNO}_3$. The reason is: