Question

What is the trend of ionization energies across a period?

A. The energies show no pattern across a period.
B. There is no change in the energies across a period.
C. The energies increase from left to right across a period.
D. The energies decrease from left to right across a period.

Answer 1

@aaronq B right?

Answer 2

@aaronq

Answer 3

think about the extent of the shielding effect of electrons (to other electrons) as the number of protons (atomic number) increases across a period (to the right)

Answer 4

B is not correct, btw.

Answer 5

ok so it's D?

Answer 6

why?

Answer 7

because the numbers get less and less across the period

Answer 8

hypothetically, imagine you're going across a period, where the number of protons increases from 10 to 11, do the electrons (in the valence shell) affect other electrons in the valence shell more than the protons attract them to the nucleus?

Answer 9

ohh so since they increase then the answer is C! thank you! :)

Answer 10

glad i could help!