MCQ
Paramagnetism is exhibited by molecules
- ANot attracted into a magnetic field
- BContaining only paired electrons
- CCarrying a positive charge
- ✓Containing unpaired electrons
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[Given : $p K _{ a 1}$ and $p K _{ a 2}$ of $H _2 CO _3$ are $6.37$ and $10.32 $, respectively $; \log 2=0.30$ ]
Given : Mass of electrons $=9.1 \times 10^{-31}\, \mathrm{~kg}$
Charge on an electron $=1.6 \times 10^{-19}\, \mathrm{C}$
Planck's constant $=6.63 \times 10^{-34\,} \mathrm{Js}$