Question 1

Which of the following is the correct chemical symbol and charge for the chromous ion?

Accepted Answer

$$\mathrm{Cr}^{2+}$$

Question 2

A sample contains ions of strontium. Which of the following correctly represents the strontium ion commonly found in ionic compounds?

Accepted Answer

$$\mathrm{Sr}^{2+}$$

Question 3

Which of the following ions is known as ferric ion?

Accepted Answer

$$\mathrm{Fe}^{3+}$$

Question 4

A chemist is analyzing a compound containing tin(II) ions. What is the correct formula for the tin(II) ion?

Accepted Answer

$$\mathrm{Sn}^{2+}$$

Question 5

Which of the following ions is correctly paired with its traditional name?

Accepted Answer

$$\mathrm{Pb}^{4+}$$, plumbic

Question 6

Which of the following ions is most likely to be found in an aluminum sulfate compound?

Accepted Answer

$$\mathrm{Al}^{3+}$$

Question 7

A water sample is contaminated with nickel ions. Which of the following is the most likely charge on the nickel ion in this context?

Accepted Answer

$$\mathrm{Ni}^{2+}$$

Question 8

Which of the following correctly matches the ion with its name and charge?

Accepted Answer

Stannous, $$\mathrm{Sn}^{2+}$$

Question 9

Which of the following ions would combine with $$\mathrm{Cl}^{-} to $$form a neutral ionic compound with the formula $$\mathrm{MCl}_2$$?

Accepted Answer

$$\mathrm{Cr}^{2+}$$

Question 10

A patient is exposed to high levels of lead(IV) ions. What is the correct formula for the lead(IV) ion?

Accepted Answer

$$\mathrm{Pb}^{4+}$$

Question 11

Which of the following ions is most likely to form a compound with the formula $$\mathrm{Al}_2\mathrm{O}_3$$?

Accepted Answer

$$\mathrm{Al}^{3+}$$

Question 12

Which ion is most likely to be found in a redox reaction where iron is oxidized from its lower to higher oxidation state?

Accepted Answer

$$\mathrm{Fe}^{3+}$$

Question 13

A compound contains the chromous ion. Which of the following best describes the electron configuration change from neutral chromium to chromous ion?

Accepted Answer

Two electrons are removed from the neutral atom.

Question 14

Which of the following ions is most likely to be colorless in aqueous solution?

Accepted Answer

$$\mathrm{Al}^{3+}$$

Question 15

Which of the following ions is most likely to be found in a battery as a component of the cathode reaction?

Accepted Answer

$$\mathrm{Pb}^{4+}$$

Common Cations in General Chemistry

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