WorksheetsStructure 1.3 Review
Total questions: 20
Worksheet time: 10mins
Which is correct for the following regions of the electromagnetic spectrum?
UV = high energy, short wavelength
IR = low energy, low frequency
UV = high energy, low frequency
IR = low energy, long wavelength
UV = high frequency, short wavelength
IR = high energy, long wavelength
UV = high frequency, long wavelength
IR = low frequency, low energy
What is the maximum number of electrons in the 4p subshell?
6
10
2
8
What is the electron configuration of this orbital diagram?
1s22s22p3
1s22p32s2
1s22s32p2
1s22s23s3
An electron transition between energy levels n = 4 and n = 2 in an isolated atom produces a line in the visible spectrum. Which electron transition in the same atom is likely to produce a line in the UV spectrum?
from n = 4 to n = 1
from n = 4 to n = 3
from n = 3 to n = 2
from n = 5 to n = 3
What is the maximum possible number of electrons in the third energy level?
3
6
9
18
What is the electron configuration of chromium [Z = 24] in the ground state?
[Ar]3d7
[Ar]4s23d4
[Ar]4s13d5
[Ar]4s14p5
Which of the following is correct?
IE3 > IE4
Molar ionization energies are measured in kJ
The third ionization energy of the atom X represents the process:
X2+(g) → X3+(g) + e-
Ionization energies decrease across a period going from left to right
Which of the following subshells contains the highest energy?
2s
2p
2d
3d
Which of the following is the correct orbital diagram for Carbon?
Which of the below gives the correct electron configuration of a Cr3+ ion?
[Ar]4s13d2
[Ar]4s23d1
[Ar]3d3
[Ar]3d4
Which statements about the hydrogen emission spectrum are correct?
I. The lines converge at higher energies
II. The lines converge at higher frequencies
III. The lines converge at higher wavelengths
I and II only
I and III only
II and III only
I, II, and III
What will happen to the frequency of moving light particles if the wavelength is doubled, assuming the velocity is constant?
The frequency will be doubled
The frequency will be reduced by half
The frequency will not be affected
The frequency will be increased by four
Which of the following statement(s) is (are) true?
I. The emission spectra are produced from a release of energy of excited electrons
II. No two electrons in one atom have the same set of quantum numbers
III. The electrons in an orbital must have an opposite spin
I only
I and II only
II and III only
I, II, and III
How many fully occupied p orbitals are there in selenium, Se, atom?
2
3
7
9
What is the maximum number of electrons in the 4d subshell?
6
10
2
8
Which equation represents the second ionization energy for Cu?
Cu2+(g) → Cu3+(g) + e−
Cu+(g) → Cu2+(g) + e−
Cu2+(g) + e− → Cu+(g)
Cu(g) → 2e− + Cu2+(g)
Which statement about ionization energies is incorrect?
First ionization energies are always higher than second ionization energies
It represents the energy required to remove electrons
The general trend is that first ionization energies increase across a period
The general trend is that first ionization energies decrease down a group
Energy levels for an electron in a hydrogen atom are
evenly spaced
farther apart near the nucleus
closer together near the nucleus
arranged randomly
What is the electron configuration for an atom with Z = 22
1s22s22p63s23p63d4
1s22s22p63s23p64s24p2
1s22s22p63s23p63d24p2
1s22s22p63s23p64s23d2
Element W would have how many valence electrons?
5
6
7
8
