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BITSAT 2022
Exam
BITSAT
Year
2022
Subject
Chemistry
Chapter
Hydrogen

BITSAT 2022 · Chemistry · Hydrogen

Which one of the following is correct order of given isotopes? I....

Which one of the following is correct order of given isotopes? I. T2>D2>P2T_2 > D_2 > P_2 (order of boiling point) II. T2>D2>P2T_2 > D_2 > P_2 (order of bond energy) III. T2=D2=P2T_2=D_2=P_2 (order of bond length) IV. T2<D2<P2T_2 < D_2 < P_2 (order of reactivity with Cl2\mathrm{Cl}_2 )

Options

  1. AI and II
  2. BIII and IV
  3. CII, III and IV
  4. DAll of these

Correct answer

D. All of these

Step-by-step solution

Protium (P)(P), deuterium (D)(D) and tritium (T)(T) are the three isotopes of hydrogen. These isotopes follow the order in different contexts as shown below : T2>D2>P2T_2 \gt D_2 \gt P_2 [Order of boiling point (BP)] T2>D2>P2T_2 \gt D_2 \gt P_2 [Order of bond energy \left.(\mathrm{BE})\right]T_2=D_2=P_2[Orderofbondlength(BL)]T2<D2<P2[Order of bond length \left.(\mathrm{BL})\right]T_2 \lt D_2 \lt P_2 [Order of reactivity with Cl2\mathrm{Cl}_2 ] Hence, all the given order are correct.
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