Someone help ,, I'll give brainliest lol .

D.

Explanation:

Hopefully this helps

A

Explanation:

I think the correct answer is A. Online it says that oxidation can be defined in terms of the adding or removing oxygen to a compound/Oxidation is the gain of oxygen.

atomic number of carbon is 6

electronic configuration of carbon is 1s²2s²2p²

orbital diagram of c is as shown here in the image.

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.