24. What is the reason for the slightly different physical properties of all the isotopes of an element ?
25. Explain why, the atomic masses of many elements are in fractions and not whole numbers.
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Answer:
Isotopes of an element have different physical properties because they have different mass numbers.
Explanation:
The atomic masses of many elements are in fraction and not whole numbers. ... Because each element has various isotopes that are present in nature, and the atomic mass is an average of all of these isotope weights.
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Answer:
because of different mass number
Explanation:
as mass determines the physical property such density , melting and boiling point
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