Question

Which of these is not a monomer for a high molecular mass silicone polymer?

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• A. $PbSiC{l}_3$
• B. $M{e}_{2}SiC{l}_2$
• C. $MeSiC{l}_3$
• D. $M{e}_{3}SiCl$

Answer 1

The correct option is D $M{e}_{3}SiCl$

$MeSiC{l}_3,M{e}_{2}SiC{l}_{2}andPbSiC{l}_3$ are monomers for a high molecular mass silicone polymer.
However, $M{e}_{3}SiCl$ is not a monomer for a high molecular mass silicone polymer as it contains only one $Cl$ atom and at best, it can form a dimer.
It act a chain terminating organo silane