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MHT CET202611 April 2026Morning ShiftChemistryStructure of AtomActual

Match List I with List II List I Element List II Number of Neutron (A). ²⁴₁₂Mg (I). 5 (B). ²⁷₁₃Al (II). 12 (C). ⁹₄Be (III). 6 (D). ¹²₆C (IV). 14 Choose the correct answer from the options given below:

Options

  1. A(A) - (I), (B) - (II), (C) - (III), (D) - (IV)
  2. B(A) - (II), (B) - (IV), (C) - (I), (D) - (III)
  3. C(A) - (I), (B) - (II), (C) - (IV), (D) - (III)
  4. D(A) - (III), (B) - (IV), (C) - (I), (D) - (II)

Correct answer

B. (A) - (II), (B) - (IV), (C) - (I), (D) - (III)

Step-by-step solution

The number of neutrons in an atom is calculated as the difference between its mass number ( A ) and atomic number ( Z ), i.e., n = A - Z . For ²⁴₁₂Mg , n = 24 - 12 = 12 . This matches (II). For ²⁷₁₃Al , n = 27 - 13 = 14 . This matches (IV). For ⁹₄Be , n = 9 - 4 = 5 . This matches (I). For ¹²₆C , n = 12 - 6 = 6 . This matches (III). The correct matching is (A) - (II), (B) - (IV), (C) - (I), (D) - (III). Answer: (A) - (II), (B) - (IV), (C) - (I), (D) - (III)

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