Describe the trends of ionization energy as you move from left to right and top to bottom in the periodic table?

Question

anonymous · Answer

List two other periodic properties.

unklerhaukus · Answer

ionization gets harder from left to right

anonymous · Answer

oxidising potential,reducing potential,atomic size,electronegativity

mani_jha · Answer

Ionization energy is low when it is easy for electrons to be removed(You've to apply less energy to the electrons).
Now as you descend down a group, the size of the atom increases and the valence electrons get farther away from the nucleus. What effect this must have on the ionisation energy?