Question

Left to right in period the ionisation energy of the elements increases and top to bottom it decreases. why?​

Answer 1

ANSWER

From left to right in a period ionization energy of elements increases due to balance instability. From top to bottom ionization energy of elements decreases to electron Shielding.

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Answer 2

Answer:

Explanation:

Moving left to right across a period, atomic radius decreases, so electrons are more attracted to the (closer) nucleus. The general trend is for ionization energy to decrease moving from top to bottom down a periodic table group.

-Alex