# Chlorine

### Cl

## Finding Neutrons

Next up, we have the equation

**M(atomic mass)-A(tomic #)=N(eutrons)**In order to find this, we take the mass (which is 35.45 but we're just going to use 35) and take away the atomic number, making the equation **35-17=18** and this is the amount of neutrons. So now we know that m=35, a=p=e=17 and n=18.

(**IF YOU ALREADY KNOW WHAT YOUR NEUTRON NUMBER IS, USE P(ROTONS)+N(EUTRONS)=M(ATOMIC MASS) TO FIND YOUR MASS. WITH THIS ATOM, IT WOULD BE 17+18=35) **

## More Atomic Info

In this atom, there are three energy levels with seven valence electrons. The valence electrons will affect the stability of an atom, also affecting its probability of reaction. The less valence electrons an atom has, the more likely it is to react. This atom is less likely to react, but it still is posible that it will.

(Diagram to the right is a diagram of the Chlorine atom)