What happens when bromine reacts with carbon?
a. electrons move from carbon atoms to the bromine atoms
b. electrons move from bromine atoms
c. electrons become delocalized among the atoms
d. electrons are shared between the bromine atoms and carbon atoms

Plss anybody know how to do this? ? i need the answers from a through d

Copper has free electrons per cubic meter. a 71.0-cm length of 12-gauge copper wire that is 2.05 mm in diameter carries 4.85 a of current. (a) how much time does it take for an electron to travel the length of the wire? (b) repeat part (a) for 6-gauge copper wire (diameter 4.12 mm) of the same length that carries the same current. (c) generally speaking, how does changing the diameter of a wire that carries a given amount of current affect the drift velocity of the electrons in the wire?

This is the substance(s) formed in a chemical reaction.