Question

Which of the following compounds contains no covalent bond(s)?

$NaCl,PH_{3},O_{2},B_{2}H_{6},H_{2}SO_{4},CaCl_{2}$

• A. $NaCl,B_{2}H_{6}$
• B. $NaCl,B_{2}H_{6},PH_{3}$
• C. $NaCl,H_{2}SO_{4}$
• D. NaCl $,CaCl_{2}$

Answer 1

Answer: (D)

NaCl and $CaCl_{2}$ contains only ionic bond between $Na^{+}$ and $Cl^{-}$ ions $\left(N a^{+} C l^{-}\right)$ and between $Ca^{2 +}$ and $Cl^{-}$ respectively while rest other compounds have covalent bonds as follows