Electron Review

Chem I | Chem II AP
Your score: 0%
1)
Identify the element that can have the following electronic configuration:
a)
[Ar] 4s2 3d10 4p5
b)
[Ne] 3s1
c)
1s2 2s2 2p6
d)
[Ar] 4s2 3d10
e)
1s2
f)
[Kr] 5s2 4d6
g)
[Ne] 3s2 3p4
h)
1s2 2s1
2)
Give the electronic configuration for the following elements. Indicate the number of valence shell electrons.
a)
F
b)
Se
c)
Be
d)
Sn
3)
Give the electron dot notation for the following elements. Indicate the number of unpaired electrons in each.
a)
Mg
Mg
b)
Sb
Sb
c)
Br
Br
d)
K
K
e)
Ga
Ga
f)
Ar
Ar
4)
Match the following electron dot notation with the appropriate group number:
5)
What valence shell configuration does each of the following groups have in common: (For example: s2p6)
18
2
13
15
17
1
14
16
6)
Which energy level is the first to contain a(n):
s orbital
p orbital
d orbital
f orbital
7)
Which sublevel(s) are present in the follwoing energy levels:
First E.L.
Second E.L.
Third E.L.
Fourth E.L.
8)
How many orbials are present in the following energy levels:
First E.L.
Second E.L.
Third E.L.
Fourth E.L.
Multiple choice: Pick the best answer
10)
Bohr postulated that electrons coud only exist in certain paths around the nucleus which he termed

Bohr theorized that the atom acted like a solar system with the electrons 'orbit'ing around the nucleus.

11)
According to Bohr, the more energy an electron has
12)
Spectral lines of the element are caused by
13)
The maximum number of electrons possible for the third energy level is:
14)
Unlike the Bohr model of the atom, the orbital model describes an electron
15)
The principle quantum number describes an electron's
16)
The 4f sublevel is filled next after
17)
If all electrons occupy the lowest available energy levels of an atom, the atom is said to be
18)
Oxygen has
19)
Which of the following sublevels is the one associated with the lowest energy?
20)
In order to occupy the same orbital, two electrons must have:
21)
Stable electronic configurations are likely to contain:
22)
As the wavelength of light increases, the frequency/ energy:
23)
Which of the following statements is true?
24)
Which of the following statements about quantum theory is incorrect?
25)
When ignited, a copper compound burns with a green flame. The wavelength of this light is greater than that of:
26)
If the frequency of electromagnetic radiation decreases, which of the following is correct?
27)
In the investigation of the electronic absorption spectrum of a particular element, it is found that a photon having a wavelength of 500 nm provides just enough energy to promote an electron from the second energy level to the third. From this information, we can deduce
28)
How many f orbitals have n = 3?
29)
An element E has the electronic configuration [Kr] 5s2 4d10 5p2. The formula for the fluoride of E is most likely
32)
How many electrons can be contained in all of the orbitals with n = 3?
33)
Which of the following frequencies corresponds to light with the longest wavelength?

The longest wavelength should have the lowest frequency.

34)
What is the wavelength of an electron (mass = 9.1 x 10-31 kg) moving with a velocity which is 1.0 x 10-3 times the speed of light?
(3 x 108 m/sec)(1 x 10-3) = 3 x 105 m/sec
λ =
h
mc
=
6.626 x 10-34 Jsec
(9.1 x 10-31 kg)(3 x 105 m/sec)
= 2.42 x 10-9 m
2.42 x 10-9 m x
1 x 109 nm
1 m
= 2.42 nm
35)
A strong line in the spectrum of atomic mercury has a wavelength of 253.7 nm. When mercury emits a photon of light at this wavelength, the frequency of this light is:
253.7 nm x
1 m
1 x 109 nm
= 2.537 x 10-7 m
ν =
c
λ
=
3 x 108 m/sec
2.537 x 10-7 m
= 1.18 x 1015 Hz
36)
This might be helpful to look at: