Answer to Question #166268 in General Chemistry for ma

Question

Investigate: Gather data for ionization energy across a period. Record in the table below.

Answer 1

The ionization energy of an element increases as one moves across a period in the periodic table because the electrons are held tighter by the higher effective nuclear charge.

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.