how does the atomic number affect the energy needed to remove the easiest electron.?

Answer 1

As you go down any column in the periodic table it requires less energy to remove the first electron. As you go across the rows it requires more energy to remove each electron.

Answer 2

ok to remove an electron or its electron negativity is the ablitity for an electron to gain an electron. So if you look at the periodic table electron negativity goes up when you move left on the table and goes up when you move up the table. Hence F has the highest electron negativity meaning that it will not lose an but most likey gain the electron. So with electron negativity it shows that to remove an electron from F would be incrediably hard but look at potassium (K) and it would most likey lose an electron since its electron negativity is low