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Chemistry · Some Basic Concepts of Chemistry
हिन्दीCalculate the total number of electrons present in \( 1.4\text{ g} \) of dinitrogen gas (\( \text{N}_2 \)).
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Correct answer · Option B
4.215 × 10²³
Explanation
Moles of \( \text{N}_2 = \frac{1.4}{28} = 0.05\text{ mol} \). Each \( \text{N}_2 \) molecule has \( 7 + 7 = 14 \) electrons. Total electrons = \( 0.05 \times 14 \times 6.022 \times 10^{23} = 4.215 \times 10^{23} \).
