Anonymous asked in Science & MathematicsChemistry · 2 months ago

Is atomic weight of Na rounded up to 23 usually? Will it be wrong to say atomic weight is 23?

1 Answer

  • 2 months ago
    Favourite answer

    The atomic mass (standard atomic weight) of naturally occurring Na is 22.989769. If you round that to 23, then you will be off by 0.045%. In many uses, that's not important, but some cases it is. Right and wrong depend on how accurate you need to be.

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