Atomic Structure 1 Question 21

21. The mass of a hydrogen is …… kg.

(1982, 1M)

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Answer:

Correct Answer: 21. $\left(1.66 \times 10^{-27} \mathrm{~kg}\right)$ $\mathrm{A} \rightarrow \mathrm{r} ; \mathrm{B} \rightarrow \mathrm{q} ; \mathrm{C} \rightarrow \mathrm{p}, \mathrm{D} \rightarrow \mathrm{s}$

Solution:

  1. Mass of one $\mathrm{H}$-atom $=\frac{10^{-3}}{6.023 \times 10^{23}} \mathrm{~kg}=1.66 \times 10^{-27} \mathrm{~kg}$