Atomic Structure - Result Question 18
18. Many elements have non-integral atomic masses, because
(1984,1 M)
(a) they have isotopes
(b) their isotopes have non-integral masses
(c) their isotopes have different masses
(d) the constituents, neutrons, protons and electrons, combine to give fractional masses
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Answer:
Correct Answer: 18. (a, c)
Solution:
- Many elements have several isotopes. For such elements, atomic mass is average of the atomic masses of different isotopes, which is usually non-integral.
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