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Would You Expect the First Ionization Enthalpies for Two Isotopes of the Same Element to Be the Same Or Different? Justify Your Answer. - Chemistry

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Question

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

Solution 1

The ionization enthalpy of an atom depends on the number of electrons and protons (nuclear charge) of that atom. Now, the isotopes of an element have the same number of protons and electrons. Therefore, the first ionization enthalpy for two isotopes of the same element should be the same.

Solution 2

Ionization enthalpy, among other things, depends upon the electronic configuration (number of electrons) and nuclear charge (number of protons). Since isotopes of an element have the same electronic configuration and same nuclear charge, they have same ionization enthalpy.

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APPEARS IN

 NCERT Solution for Chemistry Textbook for Class 11 (2018 (Latest))
Chapter 3: Classification of Elements and Periodicity in Properties
Q: 25 | Page no. 94
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Would You Expect the First Ionization Enthalpies for Two Isotopes of the Same Element to Be the Same Or Different? Justify Your Answer. Concept: Periodic Trends in Physical Properties of Elements - Ionization Enthalpy.
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