The helium atom has 2 electrons.
How did I know this? Well, I looked at the Periodic Table, and saw that for
how many electrons does lithium have
how many electrons does a carbon atom have?
How many electrons does sulfur have in it's valence shell?
How many core electrons does an atom of Br have?
how many valance electrons do Bromine have
how meny electrons does sulfur have?
How many electrons are there in second principal energy level(n=2) of a phosphorus atom?
How many electrons would have to be removed from a coin to leave it with a charge of +1.0 10-7 C?
A charge Q is transferred from an initially uncharged plastic ball to an identical ball 13 cm away. The force of attraction is then 14 mN. How many electrons weretransferred from one ball to the other?