ABC26IN0177 · Main Group Elements
Subject: Inorganic Chemistry · Chapter: Main Group Elements · Topic: Main Group Elements – General · Exam: CSIR-NET 2011 · Marks: 2 · Difficulty: Hard
The correct order of stability of difluorides is:
(a)$\mathrm{GeF}_{2}>\mathrm{SiF}_{2}>\mathrm{CF}_{2}$
(b)$\mathrm{CF}_{2}>\mathrm{SiF}_{2}>\mathrm{GeF}_{2}$
(c)$\mathrm{SiF}_{2}>\mathrm{GeF}_{2}>\mathrm{CF}_{2}$
(d)$\mathrm{CF}_{2}>\mathrm{GeF}_{2}>\mathrm{SiF}_{2}$
Answer
Explanation
Stabilisation via back-bonding. Due to the inert pair effect, the stability of the +2 oxidation state increases down the group.
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