Question

which substance has three covalent bonds? *

h₂o

ch₂cl₂

ccl₄

nh₃

Explanation:

Step1: Analyze \(H_2O\)

Oxygen has 6 valence electrons. In \(H_2O\), oxygen forms 2 covalent bonds with 2 hydrogen atoms.

Step2: Analyze \(CH_2Cl_2\)

Carbon has 4 valence electrons. In \(CH_2Cl_2\), carbon forms 4 covalent bonds (2 with H and 2 with Cl).

Step3: Analyze \(CCl_4\)

Carbon has 4 valence electrons. In \(CCl_4\), carbon forms 4 covalent bonds with 4 chlorine atoms.

Step4: Analyze \(NH_3\)

Nitrogen has 5 valence electrons. In \(NH_3\), nitrogen forms 3 covalent bonds with 3 hydrogen atoms.

Answer:

NH₃