Question

question 10
identify the formal charge for c in ch₃⁻.
○ −1
○ 1
○ 0
○ 2

Explanation:

Step1: Valence electrons of C

Carbon has 4 valence electrons.

Step2: Non-bonding electrons on C

In CH₃⁻, C has 2 non-bonding electrons (lone pair).

Step3: Bonding electrons calculation

3 C-H bonds: 3×2=6 bonding electrons; ½ bonding electrons=3.

Step4: Formal charge formula

FC = 4 - (2 + 3) = -1.

Answer:

-1