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JEE Main levelSingle correct optionDifficulty 2 of 3df193

Match the elements in Column I with their ground-state outer configurations in Column II. Column I: P = Th (Z = 90), Q = Pa (Z = 91), R = Am (Z = 95), S = Cm (Z = 96). Column II: 1 = , 2 = , 3 = , 4 = .

  1. AP-2, Q-3, R-1, S-4
  2. BP-3, Q-2, R-1, S-4
  3. CP-3, Q-2, R-4, S-1
  4. DP-3, Q-1, R-2, S-4

Answer: B

Th is (3). Pa is (2). Am reaches the half-filled with (1). Cm retains and adds a electron, giving (4). So P-3, Q-2, R-1, S-4.
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