Question

what happens to atomic size and ionization enthalpy when we go from left to right and top to bottom in modern periodic table​

Answer 1

Answer:

The ionization energy of the elements within a period generally increases from left to right. This is due to valence shell stability. The ionization energy of the elements within a group generally decreases from top to bottom. This is due to electron shielding.

Answer 2

Explanation:

Atomic size increase from Left to Right in Modern periodic table.

and decreases from top to bottom.