Question

1. which of the following is not a molecular (covalent) compound?

nh₄oh
c₄h₁₀
si₂br₆
pcl₅

Explanation:

• C₄H₁₀ (butane) is a hydrocarbon. Hydrocarbons are composed of non - metals (carbon and hydrogen) and form covalent bonds.
• Si₂Br₆ has silicon (a non - metal) and bromine (a non - metal). Non - metals form covalent compounds.
• PCl₅ has phosphorus (a non - metal) and chlorine (a non - metal). Non - metals form covalent compounds.
• NH₄OH is composed of the ammonium ion \(NH_{4}^{+}\) and the hydroxide ion \(OH^{-}\). It is an ionic compound as it is made up of ions held together by electrostatic forces.

Answer:

NH₄OH