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Iso-Electronic Species

Would you exp...

Question

Would you expect the first ionization enthalpies for two isotopes of same element to be same or different? Justify your answer.

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Solution

Isotopes are chemical elements with same no. of $e^{-}$ and proton, only no. of neutrons are different. The atomic no. remains the same only atomic mass differs. Hence the ionization energy of the isotopes of a chemical element remains the same.

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Q. the first ionization enthalpy

(Δ_{i} H)

values of the third period elements, Na, Mg and Si are respectively 496, 737 and 786 kJ mol

^{- 1}

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