3. Define ionization energy and discuss the trend in the periodic table.

Question

Question

Answer 1

Answer #1

Answer) Ionization energy is defined as amount of energy required to remove an electron from atom in gaseous state or ion.

Ionization energy increases from moving left to right in the periodic table because the force of attraction between nucleus and electron increases as size of atom decreases from left to right so more energy is required to remove an electron as we move across periodic table
Ionization energy decreases from top to bottom in the periodic table because the force of attraction between nucleus and electron decreases as size of atom increases from top to bottom so less energy is required to remove an electron as we move down the periodic table

Answer 2

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