Payal posted an Question
October 13, 2020 • 19:54 pm 30 points
  • IIT JAM
  • Chemistry (CY)

Which of the following hydrogen molecules has highest vibrational frequency? (d deuterium; t = tritium) (a) ha 3. (b) hd (c) da (d) ta

Which of the following hydrogen molecules has highest vibrational frequency? (D deuterium; T = tritium) (A) Ha 3. (B) HD (C) Da (D) Ta

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    Priyanshu kumar Best Answer

    The vibrational freq is inversely related to the reduced mass of the atom pair. Since H2 has the smallest reduced mass ( lightest), it has the greatest freq.

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    Option A vib freq =(1/2pi)(sqrt(k/u))  u is reduced mass  u = m1m2/(m1 + m2)

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