Which statement about the emission spectrum of hydrogen is NOT true?

The visible spectral lines are called the Lyman series

Which of the following statements about complexes is true?

The ligand contains a lone pair

If the crystal field splitting energy Δ is larger:

The wavelength absorbed decreases

Which statement about periodic trends is true?

Group 6 elements have unusually low 1st ionisation energies

Which of the following options correctly matches the name to the description ?

Aufbau: lower energy orbitals fill first

Which of the following is NOT a limitation of the Bohr model?

It cannot explain spectral lines in the non-visible spectrum

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Chemistry of Art: Final

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A quiz for the NSW HSC module Chemistry of Art #hsc #chemistry

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Questions 20

Answers

1
Which of the following complex names is correct?
Diamminedibromodiiodocopper(II) ion
Diamminediaquaplatinum(II) ion
Dichlorotetrawaterchromium(III) ion
Dichlorodi(ethylenediamine)cobalt(III) ion
2
Which of the following does NOT correctly match the flame colour to the metal?
Barium: green
Strontium: orange-red
Copper: green
Potassium: violet
3
Which statement about the emission spectrum of hydrogen is NOT true?
The visible spectral lines involve transitions to/from n = 2
The spectral lines are spaced closer at shorter wavelengths
The subshells for the n = 3 level are degenerate
The visible spectral lines are called the Lyman series
4
Which of the following compounds will oxidise aqueous chloride ions?
Cr3+
MnO4-
Mn2+
Cr2O72-
5
What is the electron configuration of the iron(II) ion?
1s2 2s2 2p6 3s2 3p6 3d6
[Ar] 3d6 4s2
[Ar] 4s2
1s2 2s2 2p6 3s2 3p6 3d4
6
Which technique will cause zinc oxide to turn yellow for a prolonged period of time?
UV spectroscopy
IR spectroscopy
Laser microspectral analysis
Atomic emission spectroscopy
7
Which of the following statements about complexes is true?
The metal ion is the Lewis base
The ligand contains a lone pair
The ligand contains a coordinate covalent bond
The donor atom is the metal ion
8
If the crystal field splitting energy Δ is larger:
The strength of the ligand field decreases
The energy absorbed decreases
The wavelength absorbed decreases
The frequency absorbed decreases
9
What is the formula of yellow ochre?
FeO(OH)
anhydrous Fe2O3
Fe3O4
Fe2O3.xH2O
10
The absorption spectrum of a compound is shown below. What colour is the compound?
Purple
Orange
Blue
Yellow
11
Which statement about periodic trends is true?
Electronegativity increases down a group
First ionisation energy decreases across a group
Group 3 elements have unusually high 1st ionisation energies
Group 6 elements have unusually low 1st ionisation energies
12
What is the oxidation state of Mn in KMnO₄?
+7
+5
+2
+3
13
Which definition is incorrect?
C
D
A
B
14
Which quantum number describes the orientation of an orbital?
Principal (n)
Magnetic (ml)
Spin (ms)
Azimuthal (l)
15
What was the first modern synthetic pigment?
Orpiment
Prussian blue
Chrome yellow
Alizarin
16
Which of the following options correctly matches the name to the description ?
Schrodinger: Electrons occupy circular orbits
Hund: electrons fill all orbitals singly before pairing
Pauli: Electrons in a subshell must be of opposite spin
Aufbau: lower energy orbitals fill first
17
Which of the following is NOT a limitation of the Bohr model?
It cannot explain spectral lines in the non-visible spectrum
It cannot explain line splitting in a magnetic field
It cannot explain the "D" doublet of the sodium spectrum
It cannot predict the spectra of multi-electron systems
18
What is the geometry of bis(ethylenediamine)diiodocobalt(III)?
trigonal bipyramidal
octahedral
square planar
tetrahedral
19
Which of the following pigments were NOT used in prehistoric Aboriginal art?
Verdigris
Kaolin
Bone black
Red ochre
20
Which of the following pigments is the least toxic?
Malachite
Galena
Vermilion
Realgar

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