Which of the following halides are stabl...

Which of the following halides are stable

`SiCl_(4)`

`CF_(4)`

`C Cl_(4)`

`PbI_(4)`

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The correct Answer is:

A, B, C

Aquadag, oildag are formed from graphite, gemstone is `ZrSiO_(4)`

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Which of the following is a more stable carbocation?

Sec. pentyl carbocation

Tert. Pentyl carbocation

Isopentyl carbocation

Neopentyl carbocation

`Pb^(4+)`

`Sn^(4+)`

`Ge^(4+)`

`Ge^(2+)`

`"CCl"_(4)`

`GeI_(4)`

`SnI_(4)`

`PbI_(4)`