• anonymous
4.Why is the first ionization energy of a nonmetal much higher than that of an alkali metal in its same period? Provide an answer using 3 – 4 sentences in your own words.
  • Stacey Warren - Expert
Hey! We 've verified this expert answer for you, click below to unlock the details :)
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
  • katieb
I got my questions answered at in under 10 minutes. Go to now for free help!
  • Rushwr
1st ionization energy is the energy needed to loose one electron. ionization energy depends on the attraction between the nucleus and the electron removed(this depends on the Nuclear charge and the atomic radii) and the stability of certain electronic configuration. In group 1 alkali metals the atomic radii are very large relative to the nuclear charge. Hence the attraction of the outer most energy level to the nucleus is very less. Therefore the removal of 1st loosely bound electron is very easy . (shielding effect works on it ) when going from left to right across a period ( excluding the d block elements) the atomic radii decreases gradually . Though we expect a gradual decrease in the ionization energy across a period we get a zig zag pattern instead. But usually the non metals have a higher ionization energy as their radii are small thus the e/r ratio is high! it is hard to remove the electron.

Looking for something else?

Not the answer you are looking for? Search for more explanations.