Which of the following species is/are paramagnetic?
`Fe^(2+),Zn^(0),Hg^(2+),Ti^(4+)`

Options

A. `Only Fe^(2+)`
B. `Zn^(0) and Ti^(4+)`
C. `Fe^(2+) and Hg^(2+)`
D. `Zn^(0) and Hg^(2+)`

Answer

A

Explanation

Paramagnetic species contain unpaired electrons. Thus , among the given species only `Fe^(2+)(3d^(6))` is paramagnetic.