Question

Why is the second ionization energy greater than the first ionization energy?
A. It is more difficult to remove a second electron from an atom.
B. The size of atoms increases down a group.
C. The size of anions decreases across a period.
D. The nuclear attraction from protons in the nucleus decreases.

Answer 1

plzzzz help and try to explain it to me. i cant wrap my mind around this :P

Answer 2

To your understanding, what is ionization energy?

Answer 3

isn't it the amount of energy needed to remove an electron ?

Answer 4

i thought it was A. but im not sure :P i have a B in chem right now so i really needa get this stuff down. but it sounds like blaaahhhhhhh to me

Answer 5

Yes. The amount of energy needed is dependent on the stability of the ion. So for example, the first ionization energy of potassium is going to be really high, because when you remove its valence electron, it has the electron config of argon, which satisfies the octet rule and hence very stable.

Answer 6

When K+ is really stable, it would not want to lose another electron, since the end product (K^2+) would be more unstable than K+. So it requires a lot of energy to remove a second electron.

Answer 7

so A is correct ? :D

Answer 8

It should be A.

Answer 9

Grazie !(:

Answer 10

Yes, it should be A.
the other answers don't really make sense.