CBSE Class 12-science Answered
Why does antinomy have lower boiling point than arsenic?
Asked by riyagharat2020 | 22 Mar, 2021, 22:46: PM
The melting points increase down the group due to increase in their atomic size. The unexpected decrease in the melting points of antimony and bismuth is because of their tendency to form three covalent bonds instead of five covalent bonds due to inert pair effect. This results in weakening the attraction among their atoms thus lowering their melting points. Because of larger size of atoms, bismuth has still weaker interatomic forces than antimony and thus has still lower melting point.
Answered by Ravi | 22 Mar, 2021, 23:17: PM
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