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Some Basic Concepts of Chemistry — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistrySome Basic Concepts of Chemistry1 Mark
MCQ
Atomic mass of an element is :
  • A
    Actual mass of one atom of the element
  • ✓
    Average mass of an atom of different atoms of the element
  • C
    Always a whole number
  • D
    None of these
✓

Answer

Correct option: B.
Average mass of an atom of different atoms of the element
Atomic mass is an average mass of different atoms of an element, as most elements have different isotopes. Atomic mass is usually not a whole number. It can be a fraction.

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