Question

Predict which atom has the higher ionization energy. Mg Na

Answer 1

Answer:

Mg

Explanation:

The periodic trend of ionization energy is going from left to right of the periodic table, ionization energy increases. in the periodic table, both magnesium (Mg) and Sodium (Na) fall under the same period.

Na is the found in the left-most end of the period and Mg comes after it. This means that Mg has the higher ionization energy.

Answer 2

Explanation:

Ionization energy is defined as the energy required to remove most loosely bound electron from a gaseous atom or ion.

Larger is the size of atom less energy will be necessary to remove the valence electron because force of attraction will be less between the nucleus and outermost electron.

Hence, it is easy to remove the outermost electron.

Whereas smaller is the size of atom great amount of energy will be required by it to remove the loosely bound electron.

So, when we move down a group there will be increase in size of atoms. Hence, ionization energy decreases.

On the other hand, when we move across a period then there occurs decrease in size of atoms. Hence, ionization energy increases.

As, magnesium is smaller is size than sodium and both of then are same period elements.

Thus, we can conclude that magnesium (Mg) atom has the higher ionization energy.