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Many elements have non-integral atomic masses because : (1984 - 1 Mark)
  • a)
    they have isotopes
  • b)
    their isotopes have non-integral masses
  • c)
    their isotopes have different masses
  • d)
    the constitutents, neutrons, protons and electrons, combine to give fractional masses
Correct answer is option 'A,C'. Can you explain this answer?
Most Upvoted Answer
Many elements have non-integral atomic masses because : (1984 - 1 Mark...
Option B is incorrect because we will see lots of isotopes have integral masses like C,O.

Option D is incorrect because every elements have fundamental particles.

Option A and C are correct.

Reason:- due to isotopes we calculate average mass and that becomes atomic mass of the particular element.
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Community Answer
Many elements have non-integral atomic masses because : (1984 - 1 Mark...
Because they have isotopes with different masses.
The average atomic mass is the weighed mean of their presence in nature; eg. Cl35 and Cl37 are present in ratio 3 : 1 in nature.
So  
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Many elements have non-integral atomic masses because : (1984 - 1 Mark)a)they have isotopesb)their isotopes have non-integral massesc)their isotopes have different massesd)the constitutents, neutrons, protons and electrons, combine to give fractional massesCorrect answer is option 'A,C'. Can you explain this answer?
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