WBJEE · Chemistry · Classification of Elements and Periodicity in Properties
Among \(\mathrm{Me}_{3}\mathrm{N}, \mathrm{C}_{5} \mathrm{H}_{5} \mathrm{N}\) and MeCN
(Me \(=\) methyl group) the electronegativity of \(\mathrm{N}\) is in the order
- A \(\mathrm{MeCN}>\mathrm{C}_{\mathrm{g}} \mathrm{H}_{\mathrm{s}} \mathrm{N}>\mathrm{Me}_{3} \mathrm{N}\)
- B \(\mathrm{C}_{3} \mathrm{H}_{5} \mathrm{N}>\mathrm{Me}_{3} \mathrm{N}>\mathrm{MeCN}\)
- C \(\mathrm{Me}_{3} \mathrm{N}>\mathrm{MeCN}>\mathrm{C}_{3} \mathrm{H}_{\mathrm{s}} \mathrm{N}\)
- D Electronegativity same in all
Answer & Solution
Correct Answer
(A) \(\mathrm{MeCN}>\mathrm{C}_{\mathrm{g}} \mathrm{H}_{\mathrm{s}} \mathrm{N}>\mathrm{Me}_{3} \mathrm{N}\)
Step-by-step Solution
Detailed explanation
\(\because\) In Me \(_{3} \mathrm{N} \rightarrow \mathrm{N}\) is \(s p^{3}\) -hybrid and in \(\mathrm{MeCN} \rightarrow \mathrm{N}\) is \(s p\) -hybrid Also electronegativity of any element \(\alpha \%\) \(s\) -character in hybrid orbitals. Thus, order of electronegativity for…
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