Question

Which of the following compounds contain(s) no covalent bonds?

$KCl,P{H}_3,O_2,B_2{H}_6,H_{2}S{O}_4$

• A. Only $KCl$
• B. $KCl,B_2{H}_6$
• C. $KCl,B_2{H}_6,P{H}_3$
• D. $KCl,H_{2}S{O}_4$

Answer 1

Answer: (A)

Only $KCl$

A covalent bond is formed between two nonmetals and an Ionic bond is formed between one metal and one nonmetal.

So, in $KCl$, $K$ is metal and $Cl$ is nonmetal. Hence, It is an ionic bond.

$B_2{H}_6,P{H}_3$ and $H_{2}S{O}_4$ contains covalent bonds.

Hence, option $A$ is the only correct answer.