MCQ
The positive charge of an atom is
- ASpread all over the atom
- BDistributed around the nucleus
- ✓Concentrated at the nucleus
- DAll of these
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(Given : Density of solution $=1.25 \mathrm{~g} \mathrm{~mL}^{-1}$, Molar mass in $\left.\mathrm{g} \mathrm{mol}^{-1}: \mathrm{Na}-23, \mathrm{Cl}-35.5\right)$


$I$ || $II$ || $III$ || $IV$
[Atomic number: $S =16, C 1=17, I =53$ and $Xe =54$ ]