Question

Why c-n bond length of urea shorter than methyl amine

Answer 1

Hey dear,

◆ Explanation -

• In methyl amine (CH3-NH2), C-N bond has single bond character as there is no resonance.
• In urea due to resonance, C-N bond acquires partial double bond character.
• Thus, C-N bond in urea is stronger than that in methyl amine & hence shorter in length.

* C-N bond in methyl amine => 1.47 A° and C-N bond in urea => 1.37 A°.

Thanks for asking..