Final answer:
The CH3Cl molecule with one carbon atom (C), three hydrogen atoms (H), and one chlorine atom (Cl) has 14 total valence electrons.
Step-by-step explanation:
The CH3Cl molecule consists of one carbon atom (C), three hydrogen atoms (H), and one chlorine atom (Cl). To calculate the total number of valence electrons, we add the valence electrons of each atom in the molecule.
The valence electrons in carbon (C) = 4
The valence electrons in hydrogen (H) = 1 x 3 = 3
The valence electrons in chlorine (Cl) = 7
Total valence electrons = 4 + 3 + 7 = 14 valence electrons