Question 1

Which of the following transition metals has the largest atomic radius in its period?

Accepted Answer

Mn

Question 2

What is the condensed electron configuration for the ion $$\mathrm{Cd$$^{2+}$$} in $$cadmium sulfide ($$\mathrm{CdS}$$)?

Accepted Answer

$$[Kr]\ 4d$$^{10}$$

Question 3

Which of the following ions is paramagnetic?

Accepted Answer

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

Question 4

Which statement best explains the lanthanide contraction?

Accepted Answer

It is caused by the increase in nuclear charge with no increase in electron shielding, resulting in smaller atomic radii.

Question 5

Given the electron configuration $$[Ar]\ 4s^2$\ 3d^3$, what is the number of unpaired electrons in a neutral vanadium atom?

Accepted Answer

3

Question 6

Which of the following ligands is classified as bidentate?

Accepted Answer

Ethylenediamine ($$en)$$

Question 7

What is the overall charge of the adduct formed when an aluminum ion ($$\mathrm{Al$$^{3+}$$}) $$combines with two bromides and one chloride?

Accepted Answer

-1

Question 8

Which of the following transition metals has the highest density?

Accepted Answer

Os

Question 9

What is the condensed electron configuration for $$\mathrm{Ag^+}$$ ($$Z=47$$)?

Accepted Answer

$$[Kr]\ 4d$$^{10}$$

Question 10

Which of the following is a neutral ligand?

Accepted Answer

Ammonium ($$NH_3)$$

Question 11

A complex ion is formed when $$\mathrm{Ti$$^{3+}$$}$$ combines with six carbon monoxide molecules. What is the formula for this complex ion?

Accepted Answer

$$[Ti(CO)_6]^{3+}$$

Question 12

Which of the following statements about the coordination complex $$Na_2$$[$$SnCl_6$$]$$ is true?

Accepted Answer

The sodium ion represents the counterion.

Question 13

What is the correct condensed electron configuration for $$\mathrm{Ru} ($$Ruthenium, $$Z=44$$)?

Accepted Answer

$$[Kr]\ 4d^7$\ 5s^1$

Question 14

Which of the following atoms has the most unpaired electrons?

Accepted Answer

Mn

Question 15

What is the charge of the metal cation in the adduct $$[Fe(CN)_6]^{4-}$$?

Accepted Answer

+2

Question 16

Which of the following is a polydentate ligand?

Accepted Answer

EDTA$$^{4-}$$

Question 17

Which electron configuration represents a diamagnetic ion?

Accepted Answer

$$[Ar]\ 4s^2$\ 3d$$^{10}$$

Question 18

Which of the following best describes the role of ligands in coordination complexes?

Accepted Answer

Ligands act as Lewis bases, donating at least one lone pair to the metal cation.

Question 19

What is the formula for the coordination complex created between $$[Cr(CN)_6]^{3-}$$ and $$F^-$$?

Accepted Answer

$$[Cr(CN)_6]F_3$

Transition Metals: Periodic Trends, Electron Configurations, and Coordination Chemistry

Study Guide - Practice Questions