MCQ
The atomic number of an element is always equal to
- AAtomic weight divided by $2$
- BNumber of neutrons in the nucleus
- CWeight of the nucleus
- ✓Electrical charge of the nucleus
Each proton has unit positive charge and hence, electrical charge of the nucleus is equal to the atomic number of the element.
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The correct order of elution in the silica gel column chromatography is
Given that $\left.\frac{2.303 \mathrm{RT}}{\mathrm{F}}=0.059 \mathrm{V} \text { at } \mathrm{T}=298 \mathrm{K}\right]$
Calculate the amount of energy required to convert $110\, mg$ of $'X'$ atom in gaseous state into $X^+$ ion .................... $\mathrm{kJ}$ (Atomic wt. for $X = 7\, g/mol$)