Question

Methyl cyanide is less basic than methylamine because:
(a) there is a triple bond between carbon and nitrogen atoms
(b) molecular weight is higher than methylamine
(c) the lone pair of electrons in nitriles belongs to sp-orbital and lone pair of electrons in amines belongs to sp³ -orbital
(d) None of these

Answer 1

Option C is correct.

The lone pair of electrons in nitriles belongs to sp-orbital and lone pair of electrons in amines belongs to sp³ -orbital.

Answer 2

Answer:

(c) The lone pair of electrons in nitriles belongs to sp-orbital and lone pair of electrons in amines belongs to sp³ -orbital.

Explanation:

Methyl Cyanide or Acetonitrile or MeCN

• Formula: CH3CN
• Colourless liquid
• Used as a polar a protic solvent.

Methylamine

• Formula: CH3NH2
• Colourless gas
• Primary amine
• Methylamine is used in the manufacturing of insecticides and in pharmaceuticals.

Lone Pair

Lone pair is a pair of valence electrons which are not shared with any another atom in a covalent bond. Sometimes, it is also called as unshared pair or non-bonding pair. Lone pairs are usually found in the outermost electron shell of atoms. Lone pairs can be identified by using a Lewis structure.

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