Question 1

Which of the following statements best explains the trend in atomic radius across a period for transition metals?

Accepted Answer

Atomic radius decreases due to increasing effective nuclear charge, pulling electrons closer to the nucleus.

Question 2

Which element from each pair would you expect to have the largest atomic size: Tc or Ru?

Accepted Answer

Tc, because it is to the left of Ru in the same period.

Question 3

What is the primary cause of the lanthanide contraction observed in transition metals?

Accepted Answer

Poor shielding by 4f electrons, leading to a higher effective nuclear charge.

Question 4

Which transition metal has the highest density?

Accepted Answer

Os

Question 5

For the ion $$\mathrm{Ti$$^{2+}$$}$$, which electrons are lost first when forming the cation?

Accepted Answer

Electrons from the 4s subshell.

Question 6

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

Accepted Answer

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

Question 7

Which of the following atoms has the most unpaired electrons?

Accepted Answer

Mn

Question 8

Is the vanadium atom paramagnetic or diamagnetic?

Accepted Answer

Paramagnetic, because it has unpaired electrons in its d orbitals.

Question 9

Which of the following would represent a neutral ligand?

Accepted Answer

Hydrogen sulfide

Question 10

What is the overall charge of the adduct when an aluminum ion combines with 2 bromides and 1 chloride?

Accepted Answer

$$-1$$

Question 11

Which of the following best describes a bidentate ligand?

Accepted Answer

A ligand that donates two lone pairs from two donor atoms to the metal center.

Question 12

Classify ethylenediaminetetraacetate (EDTA) as a monodentate, bidentate, or polydentate ligand.

Accepted Answer

Polydentate

Question 13

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

Accepted Answer

$$[Cr(CN)_6]^{3-} + 3F^-$$

Question 14

Which statement about the coordination complex $$Na_2$$[$$SnCl_4$$]$$ is true?

Accepted Answer

The sodium ion represents the counterion.

Question 15

Which of the following is a polydentate ligand?

Accepted Answer

EDTA

Question 16

What is the condensed electron configuration for $$Ru ($$Ruthenium) atom?

Accepted Answer

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

Question 17

Which of the following ions is most likely to form a paramagnetic complex?

Accepted Answer

$$Fe^{3+}$$

Question 18

What is the product when a $$Ni^{3+}$$ ion combines with two bromide ions?

Accepted Answer

$$[$$NiBr_2$$]^+$$

Question 19

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

Accepted Answer

Ligands are Lewis bases that donate at least one lone pair to the metal cation.

Question 20

Which of the following electron configurations represents a diamagnetic atom?

Accepted Answer

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

Transition Metals and Coordination Chemistry: Atomic Properties, Electron Configurations, Ligands, and Complexes

Study Guide - Practice Questions