####44. Based on the compounds of group 15 elements, the correct statement(s) is (are)
(2018 Adv.)
(a) is more basic than
(b) is more covalent than
(c) boils at lower temperature than
(d) The single bond is stronger than the single bond
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Solution:
- Statement wise explanation is
(i) Statement (a) is a metallic oxide while is a non-metallic oxide.
Metallic oxides being ionic are basic in nature while non metallic oxides being covalent are acidic in nature. This confirms more basic nature of in comparison to . Hence, this is a correct statement.
(ii) Statement (b) The electronegativity difference between N(3) and is less as compared to the electronegativity difference between and . More electronegativity difference leads to ionic compounds. Thus, must be more covalent in nature as compared to . Hence, this statement is also correct.
(iii) Statement (c) In intermolecular hydrogen bonding is present, which is altogether absent in . Thus, boils at lower temperature than . Hence, this is also a correct statement
(iv) Statement (d) Due to smaller size of the lone pair-lone pair repulsion is more in single bond as compared to single bond. This results to weaker single bond as compared to single bond. Hence, this statement is incorrect.
