NEET Chemistry Atomic & Molecular Mass MCQ Question
Which of the following statements about atomic and molecular mass is correct?
Atomic mass is a weighted average that reflects the relative abundance of isotopes in nature.
Molecular mass is the sum of atomic masses of all atoms in a molecule, regardless of the number of atoms.
Atomic mass is defined in grams per mole for all elements in the periodic table.
Molecular mass cannot be expressed in atomic mass units (amu) and is only in grams.
Correct Answer
Detailed Explanation
Atomic mass represents the weighted average of an element's isotopes, which accounts for their relative abundance. Molecular mass is indeed the sum of atomic masses, but it is expressed in amu, making option B incorrect. Options C and D misrepresent the definitions related to atomic and molecular mass.
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