What has the higher first ionization energy? Mg or Cl

Ionization Trend: First ionization energy will increase left to right across a period and increase bottom to top of a family (column).

If we compare Mg and Cl:

Mg is column 2 (far left) in the periodic table, while Cl is column 17 (far right). Based on the ionization rule explained above, Cl will have the higher first ionization energy.

plants need sunlight, water, and carbon dioxide to make food. plants use the raw materials of water, nutrients they absorb from soil, and carbon dioxide to make sugars the plant can use. energy from the sun and chlorophyll are also needed.