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Question 20055
NEET Chemistry · Hard

Some Basic Concepts of Chemistry: Average mass MCQ

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Average massHardQuestion 20055

Question

An element has 75% isotope of mass 24 and 25% isotope of mass 26. Average mass is:

  1. A
    24.5
    Correct
  2. B
    25
  3. C
    24.75
  4. D
    25.5

Correct answer

24.5

Explanation

Weighted average = 24×0.75 + 26×0.25.

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