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KVPY2017ChemistryStructure of Atom

Chlorine has two naturally occurring isotopes, ³⁵ Cl and ³⁷ Cl . If the atomic mass of Cl is 35.45 the ratio of natural abundance of ³⁵ Cl and ³⁷ Cl is closest to

Options

  1. A3.5: 1
  2. B3: 1
  3. C2.5: 1
  4. D4: 1

Correct answer

B. 3: 1

Step-by-step solution

Mav = M ₁ n ₁+ M ₂ n ₂ n ₁+ n ₂ 35.45= 35 n ₁+37 n ₂ n ₁+ n ₂ n ₁: n ₂=3: 1

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