In the transition of ${\rm{Cu}}$ to ${\rm{C}}{{\rm{u}}^{2 + }}$, there is a decrease in:

JEE CHEMISTRY MCQ: CHEMICAL BONDING & MOLECULAR STRUCTURE

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In the transition of

\mathrm{Cu}

\mathrm{C}{\mathrm{u}^{2 + }}

, there is a decrease in:

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Correct option: D

Number of valency electrons

Option D (Number of valency electrons) is correct because copper loses two valence electrons to form the Cu²⁺ ion.

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\mathrm{C}{\mathrm{O}_2}

\left( A \right)\mathrm{HgC}{\mathrm{l}_2},\left( B \right)\mathrm{N}{\mathrm{O}_2},\left( C \right)\mathrm{SnC}{\mathrm{l}_4},\left( D \right){\mathrm{C}_2}{\mathrm{H}_2}

{BF}_3

{BCl}_3

{BF}_3

{BCl}_3

{B}-X \pi