1.

Which of the following statements is not correct :-

Answer»

Oxidising power `=SiCl_(4) lt SnCl_(4) lt PbCl_(4)`
The ionic character of lead (II) halide decreases with increase in atomic number of halogen.
Melting POINT and boiling point of halogen increases down the group due to increase in London-dispersion force.
The liquification of Noble GASES decreases down the group.

Solution :(i) `Si^(+4) lt SN^(+4) lt Pb^(+4)`[due to inert pair effect]
(ii) size of halogen `(uarr)`
= polarisiation `(uarr)`
= ionic character `(darr)`
(iv) Liquification of nobel gases increases down the group, due to increasing in London force.


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