Question 1

The graph above shows the successive ionization energies for an element in the third period of the periodic table. Based on the sharp increase after the eighth ionization energy, which element does this graph most likely represent?

Accepted Answer

P

Question 2

Which trend is best illustrated by the sharp increase in ionization energy after the removal of the eighth electron in the graph above?

Accepted Answer

The removal of a core electron after all valence electrons have been removed.

Question 3

If the element represented in the graph above is in the third period, how many valence electrons does it have?

Accepted Answer

$5$

Question 4

Given the ionization energy data in the graph, which electron configuration change occurs at the largest jump in ionization energy?

Accepted Answer

From $[Ne] 3s^2$ to $[He] 2s^2 2p^6$

Question 5

Which of the following best explains why the ninth ionization energy is much higher than the eighth for the element shown in the graph?

Accepted Answer

The ninth electron is removed from a stable, noble gas core.

Successive Ionization Energies and Element Identification

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