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WorksheetsExam 4 review
Total questions: 15
Worksheet time: 8mins
Which of the following statements best describes the Heisenberg Uncertainty Principle?
The fact that we can know an electrons position around the atom and not the speed of the electron (the exact position and exact momentum of an electron cannot both be known simultaneously)
It states that matter behaves as both particles and waves.
It states that no two electrons in an atom can have the same set of four quantum numbers.
It states that electrons occupy degenerate orbitals singly before pairing.
In general, as you go across a period in the periodic table from left to right the atomic radius __________.
Increases
Decreases
Slows down
Speeds up
In general, as you go across a period in the periodic table from left to right the electron affinity becomes __________ negative.
More
Less
Below
Above
In general, as you go across a period in the periodic table from left to right the first ionization energy __________.
Decreases
Increases
Slows Down
Speeds Up
In general, as you go across a period in the periodic table from left to right the effective nuclear charge __________.
Decreases
Increases
Slows Down
Speeds Up
Arrange the elements Cl, S, and F in order of increasing electronegativity.
S < Cl < F
Cl < S < F
F < S < Cl
S < F < Cl
Cl < F < S
Carbonyl sulfide, OCS, has the atom connectivity O–C–S. What is the formal charge on the central carbon atom in the most favorable Lewis structure (the one that minimizes overall formal charges)?
–1
0
+1
+2
[Kr] 5s² 4d¹⁰ 5p⁴ is the electron configuration for which element?
Se
Br
Te
I
Xe
What is the photoelectric effect?
Reflection of light off a metal surface
Emission of electrons from a metal when light of sufficient frequency shines on it
Splitting of white light into a spectrum by a prism
Transmission of light through a metal
How many electron domains in tetrahedral?
5
6
3
4
Which of the following sets of quantum numbers (n, ℓ, mℓ, mₛ) is valid?
3, 3, 2, -1/2
2, 1, –1, +1/2
1, 0, 1, –1/2
4, 3, +4, +1/2
3, 1, –2, +1/2
Which of the following Lewis structures would be considered the most stable based on formal charge rules?
A unique structure with no lone pairs
A structure in which all atoms have formal charges of 0.
A structure with both atoms carrying a ±2 formal charge but satisfying the octet rule.
A structure where the most electronegative atom carries a +1 charge and the least electronegative atom carries a –1 charge.
An oxygen atom has how many unpaired electrons?
0
1
2
3
4
How many electrons can occupy the orbitals in a subshell with n = 4 and l = 1?
2
6
10
14
18
How many orbitals and electrons are in l=1?
3, 6
2, 4
5, 10
1, 2
