
Interpretation: Comparison of ionization energy of metals and non-metals has to be made and explained.
Concept introduction: Ionization energy can be described as the minimum energy absorbed by an electron in a gaseous atom or ion to get removed from the atom. As energy is absorbed, the process is endothermic.

Answer to Problem 70A
Metals generally have low ionization energy and non-metals have generally high ionization energy.
Explanation of Solution
Metals typically have 1, 2 or 3 electrons in their outermost orbital. They tend to lose electrons to attain stable noble gas configuration of full-filled orbital.
For example electronic configuration of sodium (Na) is
On the other hand, non-metals are generally electronegative that tend to have affinity towards electrons.Most of the non-metals have more than 4 valence electrons. So, it is relatively easier for them to complete its octet by accepting electron rather than donating electron.
For example electronic configuration of oxygen (O) is
Metals generally have low ionization energy and non-metals have generally high ionization energy.
Chapter 11 Solutions
World of Chemistry, 3rd edition
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