Valence Electrons in CH3- Ion

The video explains the Lewis structure of CH3-. It starts by identifying the valence electrons of Carbon and Hydrogen, including the additional electron due to the negative charge. The Carbon atom is placed in the center with Hydrogens around it. Electrons are distributed to form bonds, ensuring each Hydrogen has two electrons and Carbon achieves an octet. The formal charges are calculated, showing Carbon with a negative one charge, aligning with the overall negative charge of the ion.

How many valence electrons does Carbon have in the CH3- ion?

• 6

• 2

• 4

• 8

What is the total number of valence electrons in the CH3- ion?

• 8

• 7

• 6

• 9

Where is Carbon placed in the CH3- Lewis structure?

• Next to one Hydrogen

• On the outside

• In the center

• Above the Hydrogens

How many valence electrons are used to form bonds between Carbon and each Hydrogen in CH3-?

• 1

• 2

• 3

• 4

What is the formal charge on Carbon in the CH3- ion?

• -2

• -1

• 0

• +1

What is the formal charge on each Hydrogen in the CH3- ion?

• +1

• 0

• -1

• -2