Question

Pick the correct statement

• A. contains only ionic bonds since it is a strong electrolyte
• B. In cyanide ion, the negative charge resides on nitrogen
• C. The dipole moment of NH₃ is greater than that of NF₃
• D. is less covalent than

Answer 1

The correct option is C

The dipole moment of NH₃ is greater than that of NF₃

$(NH4{)}_{2}S{O}_4$ ammonium sulphate which dissociates into $(NH4{)}^{+}$ and $S{O}_4^{2-}$ which is why it is a strong electrolyte. However, sulphur is bonded to O and N is bonded to $H$ by covalent bonds.

Cyanide ion is ${[}^{-}C\equiv N]$. The negative charge is on carbon.

$A{g}^{+}$ in AgI has pseudo-noble gas configuration. From Fajan's Rules, AgI is more covalent than KI.

Because of opposing dipoles, $N{F}_3$ has lower net dipole moment than $N{H}_3$