Observe the following statements: i. According to VSEPR theory, \(\mathrm{ClF}_3\) and \(\mathrm{SO}_2\) are…
Observe the following statements:
i. According to VSEPR theory, \(\mathrm{ClF}_3\) and \(\mathrm{SO}_2\) are shown \(A B_3 E\) and \(A B_2 E\) type molecules respectively.
ii. \(\mathrm{SF}_4\) has "See-saw" shape.
iii. \(\mathrm{HgCl}_2\) and \(\mathrm{PbCl}_2\) have same shape.
The statements which is/are incorrect:
i, ii only
iii only
i, ii, iii
ii, iii only
Solution
Statements (i) and (iii) are not correct. Their correct explanation are as follows:
(i) According to VSEPR theory \(\mathrm{ClF}_3\) has 3 bond pairs and 2 lone pairs thus it is \(A B_3 E_2\) type molecule whereas \(\mathrm{SO}_2\) has \(2 \sigma\) bond pairs and one lone pair so it is \(A B_2 E\) type molecule.
(iii) \(\mathrm{HgCl}_2\) has a linear shape because it has 2 bond pairs only whereas \(\mathrm{PbCl}_2\) has 2 bond pairs with one lone pair thus it has a bent shape.