Question

Which of the following are tri-atomic and tetra-atomic molecules? CH3CL, CaCL2, NH3, PCL3, P2O5, H20, C2H5OH

Answer 1

ch3cl, c2h5oh. . hope this helps you

Answer 2

Tri atomic: $CaCl_2, H_2O$.

Tetra atomic: $NH_3, PCl_3$.

• The molecules which contain three atoms are called triatomic molecules.
• The molecules which contain four atoms are called tetratomic molecules.
• The triatomic molecules are $CaCl_2, H_2O$. Because calcium chloride contains one Ca and two chlorine atoms and water contains two hydrogens and one oxygen atom.
• The tetratomic molecules are $NH_3, PCl_3$. Because ammonia contains one N and three H atoms and phosphorus trichloride contains one P and three chlorine atoms.