Question

On the periodic table, the trend in ionization energy is the opposite of the trend in atomic size. true or false

Answer 1

yes , it is true ,as atomic size becomes smaller , the nucleus pulls the outer most electrons more strongly , thus more energy is required for ionization , hope u got it :D
Also , this is English , not chemistry section

Answer 2

Shouldn't this be under the Chemistry section? :/

Answer 3

In chemistry, periodic trends are the tendencies of certain elemental characteristics to increase or decrease as one progresses along a row or column of the periodic table of elements.
All periodic trends of the chemicals are based on Coulomb's law F_C = \frac{k q_1 q_2}{d^2}. As distance between the protons in the nucleus decrease from the valence electrons attributes such as electron affinity, ionization energy, electronegativity decrease.