Pin
The first five ionization energies of an unknown element are listed in the table above. Which of the following statements correctly identifies the element and cites the evidence supporting the identification?
The first five ionization energies of an unknown element are listed in the table above. Which of the following statements correctly identifies the element and cites the evidence supporting the identification?

The first five ionization energies of an unknown element are listed in the table above. Which of the following statements correctly identifies the element and cites the evidence supporting the identification?

(A) Na, because of the large difference between the first and the second ionization energies
(B) Al, because of the large difference between the third and fourth ionization energies
(C) Si, because the fifth ionization energy has the greatest value
(D) P, because a neutral atom of P has five valence electrons

SOLUTION:
In order to predict the element correctly, we need to find the greatest jump in ionization energy. In this case, we can see that the largest increase is from the third to the fourth ionization energy. This means that the element must be in group 3 on the Periodic Table. Choice B is the correct answer choice.
The large jump from third to fourth ionization energy for aluminum is due to aluminum having 3 valence electrons. Once 3 valence electrons are lost, aluminum gains a noble gas configuration and is stable. Taking the fourth electron from aluminum is much harder resulting the big jump from the third to the fourth ionization energy.

LINKS

General Chemistry Course
Online General Chemistry Tutor
Find me on Youtube
Find me on TikTok
Learn more about Transformation Tutoring

Schedule your session with an expert Chemistry Tutor Online

← Back

Thank you for your response. ✨

Pin

Similar Posts

The data from a study of the decomposition of NO2(g) to form NO(g) and O2(g) are given in the table above. Which of the following rate laws is consistent with the data?

ByMayya Alocci

FacebookTweetPin The data from a study of the decomposition of NO2(g) to form NO(g) and O2(g) are given in the table above. Which of the following rate laws is consistent with the data? Solution: We need to recognize what order this reaction is. Key facts to remember!For the first order reactions, the graph of (ln…

| |

Of the three solutions listed in the table above, which one, if any, has the greatest electrical conductivity and why?

ByMayya Alocci

FacebookTweetPin Of the three solutions listed in the table above, which one, if any, has the greatest electrical conductivity and why? (A) 0.1 M HC2H3O2(aq) because its molecules have the most atoms. (B) 0.1M KI(aq) because KI completely dissociates in water to produce ions. (C) 0.1 M CH3OH(aq) because its molecules can form hydrogen bonds. (D) All three…

A student obtains a mixture of the liquids hexane and octane, which are miscible in all proportions. Which of the following techniques would be best for separating the two components of the mixture, and why?

ByMayya Alocci

FacebookTweetPin A student obtains a mixture of the liquids hexane and octane, which are miscible in all proportions. Which of the following techniques would be best for separating the two components of the mixture, and why? (A) Filtration, because the different densities of the liquids would allow one to pass through the filter paper while…

To catalyze a biochemical reaction, an enzyme typically

ByMayya Alocci

FacebookTweetPin To catalyze a biochemical reaction, an enzyme typically(A) drives the reaction to completion by consuming byproducts of the reaction(B) binds temporarily to reactant molecules to lower the activation energy of the reaction(C) dissociates into additional reactant molecules, thereby increasing the reaction rate(D) decomposes and releases energy to increase the number of successful collisions between…

Leave a Reply