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BITSAT Chemistry Hydrogen 2022 BITSAT 2022

BITSAT Chemistry Question (2022) — Solution

Question

Which one of the following is correct order of given isotopes? I. T_2>D_2>P_2 (order of boiling point) II. T_2>D_2>P_2 (order of bond energy) III. T_2=D_2=P_2 (order of bond length) IV. T_2 < D_2 < P_2 (order of reactivity with Cl _2 )

Options

  1. A. I and II
  2. B. III and IV
  3. C. II, III and IV
  4. D. All of these

Answer

D. All of these

Step-by-step solution

Protium (P), deuterium (D) and tritium (T) are the three isotopes of hydrogen. These isotopes follow the order in different contexts as shown below : T_2>D_2>P_2 [Order of boiling point (BP)] T_2>D_2>P_2 [Order of bond energy .( BE ) ] T_2=D_2=P_2 [Order of bond length .( BL ) ] T_2 < D_2 < P_2 [Order of reactivity with Cl _2 ] Hence, all the given order are correct.

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Related: Chemistry — Hydrogen · All PYQ Banks