posted by Anne .
A. How many protons are in one atom of fluorine - 19?
B. How many neutrons are in one atom of potassium - 39?
C. How many electrons are in one neutral atom of V - 51?
D. What is the symbol for the element that has 78 protons?
E. What is the symbol for the neutral atom that has 52 electrons?
I really suspect no one here is going to do this for you.