The chemical symbol for sodium is
- A$So$
- B$Sd$
- C$NA$
- D$Na$
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Which of the following represents $1 \, u$?
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View SolutionThe mass of one atom of oxygen is:
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View SolutionWhich has more number of atoms,$100\,g$ of sodium or $100\,g$ of iron (given,atomic mass of $Na = 23\,u, Fe = 56\,u$)?
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View SolutionExpress each of the following in kilograms:
$(a)$ $5.84 \times 10^{-3} \,mg$
$(b)$ $58.34 \,g$
$(c)$ $0.584 \,g$
$(d)$ $5.873 \times 10^{-21} \,g$
$(a)$ $5.84 \times 10^{-3} \,mg$
$(b)$ $58.34 \,g$
$(c)$ $0.584 \,g$
$(d)$ $5.873 \times 10^{-21} \,g$
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View SolutionExplain the following with one example of each:
$(i)$ Atomic number
$(ii)$ Mass number
$(i)$ Atomic number
$(ii)$ Mass number
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