How many of the following statatment are correct ?

Chemistry S and P - Block Elements (S - Block Elements Not In Syllabus ) General Numeric Response

Published on: August 13, 2026

CF 4 can be prepared by reaction between SiC and F 2 .

In SiF 4 Si–F observed bond length is shorter than actual Si–F bond length

(C 2 F 4 ) n is known as PTFE.

CCl 4 react with Anyelrony HF, gives Chloro Flouro carbon (CCl 2 F 2 ) (e) CCl 4 can hydrolysis under super heating conditious. (f) Hydrolysis of SiF 4 is not complete of SiF 4 is partially hydrolysis.

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The correct answer is:

(6)

SiC + F 2 → SiF 4 + CF 4

Because of d π –p π back bonding in SiF 4 .

PTFE = Poly tetra flouro ethene

CCl 4 +HF → CCl 2 F 2 + HCl

(e) CCl 4 COCl 2 + HCl

(f) SiF 4 + F – → [SiF 6 ] –2 (F – form in I st stape hydrolysis of Si F 4 )

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