Topic 13 Transition Metals

What is the overall charge, x, of the chromium (III) complex?

• 0

• 1+

• 2-

• 3+

Tags

NGSS.HS-PS1-1

Which factor does not affect the color of a complex ion?

• temperature of the solution

• identity of the ligand

• identity of the metal

• oxidation number of the metal

Tags

NGSS.HS-PS1-1

Which of these statements are correct?

I. Zinc is not a transition element.

II. Ligands are Lewis bases.

III. Manganese(II) chloride is paramagnetic.

• I and II only

• I and III only

• II and III only

• I, II and III

Tags

NGSS.HS-PS1-1

What is the effect of a stronger ligand?

• A

• B

• C

• D

Tags

NGSS.HS-PS1-2

Which electrons are removed from iron (Z = 26) to form iron(II)?

• two 3d electrons

• two 4s electrons

• one 4s electron and one 3d electron

• two 4p electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How is color produced in transition metal complexes?

• Light is absorbed when electrons are promoted between split d-orbitals.

• Light is emitted when electrons fall between split d-orbitals.

• Light is absorbed when electrons escape from the complex.

• Light is emitted when the complex returns to ground state.

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-4

What is the oxidation state of the metal ion and charge of the complex ion in [Co(NH₃)₄Cl₂]Cl?

• A

• B

• C

• D

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which is correct for the complex ion in [Fe(H₂O)₅Cl]SO₄?

• A

• B

• C

• D

Tags

NGSS.HS-PS1-2

Which complex has the greatest d orbital splitting?

• A

• B

• C

• D

Part of the spectrochemical series is shown for transition metal complexes.

I⁻< Cl⁻ < H₂O < NH₃

Which statement can be correctly deduced from the series?    

• H₂O increases the p–d separation more than Cl⁻.

• H₂O increases the d–d separation more than Cl⁻.

• A complex with Cl⁻ is more likely to be blue than that with NH₃.

• Complexes with water are always blue.

Tags

NGSS.HS-PS1-2