Chemistry
Give reasons for the following.
The physical properties of isotopes of the same element are not identical.
Atomic Structure
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Answer
Physical properties of isotopes of the same element are different because physical properties are dependent on the atomic mass. Isotopes have different mass number [A], different number of neutrons and hence different atomic masses giving them different physical properties.
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Related Questions
Match Column A with the correct reason in Column B.
Column A Column B (a) 2713Al 1) Has 18 electrons in M shell (b) 11H 2) Has 7 electrons in M shell (c) Kr [Krypton] 3) Has 27 nucleons in its nucleus (d) 3717Cl 4) Has 8 electrons in M shell (e) 3919K 5) Has no neutrons in its nucleus Select the correct answer from the answers in brackets to complete each sentence.
- An element has electronic configuration 2, 8, 1 and 12 neutrons. Its mass no. is …………… [11/23/12]
- The maximum number of electrons in M-shell is …………… [8/32/18]
- Isotopes have same …………… [no. of neutrons / electronic configuration / atomic masses].
- An …………… [atom/ion] is capable of independent existence in solution.
- An atom with electronic configuration 2, 7 and mass number 19 will have …………… neutrons. [8/10/12]
Give reasons for the following.
The mass number of an atom is slightly less than the actual atomic mass.
Give reasons for the following.
The shells surrounding the nucleus of an atom are also called 'energy levels'.