Question

Which of the following contain both ionic and covalent bonds?

• A. $NaOH$
• B. $KCN$
• C. $N{a}_{2}S{O}_4$
• D. All of these

Answer 1

The correct option is D All of these

Solution:- (D) All of these.

• In $NaOH$, sodium acts as the cation with the hydroxide anion which means that they share an ionic bond, while the oxygen and hydrogen atoms in hydroxide are covalently bonded.
  
• In $KCN$, potassium acts as the cation with the cyanide anion which means that they share an ionic bond, while the carbon and nitrogen atoms in cyanide are covalently bonded.
  
• In ${Na}_{2}S{O}_4$, sodium acts as the cation with the sulphate anion which means that they share an ionic bond, while the sulphur and oxygen atoms in sulphate are covalently bonded.
  
• Hence all the given compounds contain both ionic and covalent bonds.