CBSE Class 9 Answered
Which of the following are isotopes and which are isobars?
Argon, Protium, Calcium, Deuterium.
Explain why the isotopes differ in physical properties?
Asked by Topperlearning User | 14 May, 2014, 01:15: PM
Expert Answer
Isotopes - Protium and Deuterium; both are isotopes of hydrogen.
Isobars - Argon and calcium; both have mass equal to 40.
Since isotopes have identical electronic configuration containing same number of valence electrons, they have similar chemical properties, but because the masses are slightly different hence, the physical properties (density, melting pt., boiling pt., etc) are different.
Answered by | 14 May, 2014, 03:15: PM
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