The Units, The Conversions, and The Sig Figs
Feelin' Light
Atom-tomy
My Chemical Romance
Who Doesn't Love Quantum Mechanics?
100
Which of the following numbers has 3 significant figures?
A. 0.02670
B. 500
C. 1.260
D. 0.300
E. 1.5 E2
D) 0.300
100
Which statement best describes the behavior of light?
A) It behaves only as a particle
B) It behaves only as a wave
C) It behaves only as a quark
D) It exhibits both particle and wave properties
E) It exhibits all of the above behaviors
D) It exhibits both particle and wave properties
100
Which of the following statements is NOT true for protons?
A) The number of protons determine the identity of an element
B) They are found in the nucleus.
C) They have a negative charge.
D) The number of protons is different in every atom
E) Protons contribute to the atomic mass number
C) They have a negative charge
100
What charge do alkaline earth metals commonly have?
A. +1
B. +2
C. -1
D. -2
E. Variable
B. +2
100
Which of these electron spin configurations would be correct for the ms quantum number?
A. 1+, 0, 1-
B. 1/2+, 1/2-
C. 1, 2, 3, 4
D. 1+, 1-
E. 0, 1
B. 1/2+, 1/2-
200
Which of the following conversion factors are INCORRECT?
A) 1 km = 1000 meters
B) 1 meter = 1 x 109 ng
C) 1 x 10-6 μg = 1 meter
D) 1 km = 1 x 104 dm
E) 3,600 s = 1 hr
C) 1 x 10-6 μg = 1 meter
200
A wave was found to have a frequency of 9.0 x 1015 s-1. Calculate its wavelength.
A. 3.3 x 10-8 nm
B. 3.3 x 10-8 m
C. 3.3 x 108 m
D. 3.3 x 10-9 nm
E. 3.3 x 109 m
c = 2.998 x 108 m · s-1
h = 6.626 x 10-34 J · s
B. 3.3 x 10-8 m
200
What is the correct condensed electron configuration for an atom of As?
A) [Ne] 3s23p6
B) [Xe] 5s25p3
C) [Ne] 3s23p1
D) [Ar] 4s03d104p5
E) [Ar] 4s23d104p3
E) [Ar] 4s23d104p3
200
Which of the following is a common ion?
A) C4+
B) Sr2+
C) F2-
D) Na-
E) He+
B) Sr2+
200
What type of orbital is being shown in this picture?
A) s
B) p
C) d
D) f
D) f
300
Convert 12.5 kilometers per second (km/s) to meters per year (m/yr).
A) 3.94 x 108 m/yr
B) 3.94 x 1012 m/yr
C) 3.94 x 107 m/yr
D) 3.94 x 1011 m/yr
E) 3.94 x 1010 m/yr
D) 3.94 x 1011 meters per year
300
Which transition in a hydrogen atom will cause an emission of the shortest wavelength photon?
A. 𝑛initial = 5 to 𝑛final = 3
B. 𝑛initial = 4 to 𝑛final = 3
C. 𝑛initial = 4 to 𝑛final = 2
D. 𝑛initial = 3 to 𝑛final = 2
E. 𝑛initial = 3 to 𝑛final = 1
E) 𝑛initial = 3 to 𝑛final = 1
300
Orbitals are designated by letters that correspond to increasing values of the angular momentum number. Which list shows the correct order of these subshells?
A) s, p, f, d
B) s, p, d, f
C) n, l, ml, ms
D) n, l, m1, m2
E) d, f, p, s
B) s, p, d, f
300
Which set of quantum numbers contains Bismuth (Z = 83)'s highest energy electron?
A) n = 6, l = 2, ml = 0, ms = 1/2+
B) n = 6, l = 1, ml = -1, ms = 1/2-
C) n = 7, l = 0, ml = 0, ms = 1/2+
D) n = 5, l = 3, ml = 2, ms = 1/2-
E) n = 7, l = 4, ml = 3, ms = 1/2-
B) n = 6, l = 1, ml = -1, ms = 1/2-
300
How many electrons in an atom can have the quantum numbers n = 3, l = 2?
A. 4
B. 5
C. 10
D. 12
E. 18
C. 10
400
Humans require an average of 13 mg of iron (Z = 26) daily in order to survive. The density that iron is held in many foods is 1.9 g/mL. Given that, how many mL of iron does a human require daily?
A. 0.0068 mL
B. 0.068 mL
C. 6.8 mL
D. 0.00068 mL
E. 25 mL
A. 0.0068 mL
400
A microwave used in medical imaging emits waves with a wavelength of 3.00 x 10-2 m. What is the energy of a single photon from this wave?
A) 6.63 x 10-24 J
B) 1.99 x 10-25 J
C) 1.99 x 10-24 J
D) 1.99 x 10-19 J
E) 1.99 x 10-23 J
c = 2.998 x 108 m · s-1
h = 6.626 x 10-34 J · s
A) 6.63 x 10-24 J
400
Which of the following are isotopes of each other?
| Element | Protons | Neutrons | Electrons |
|---|---|---|---|
| A | 23 | 24 | 23 |
| B | 24 | 23 | 24 |
| C | 25 | 27 | 25 |
| D | 23 | 24 | 22 |
| E | 24 | 22 | 24 |
D. B and E
400
The atomic radius of chlorine (Z = 17) is smaller than the atomic radius of sodium (Z = 11) primarily because chlorine experiences which of the following?
A. A greater effective nuclear charge
B. A higher principal quantum number for its valence electrons
C. Increased electron-electron repulsion in the valence shell
D. A lower effective nuclear charge
A. A greater effective nuclear charge
400
Which of the following sets of quantum number configurations represents a valid electron?
A. n = 1, l = 2 ml = 0, ms = 1/2-
B. n = 3 l = 0 ml = 1, ms = 1/2+
C. n = 2, l = 1, ml = -1, ms = 1/2-
D. n = 2, l = -1, ml = 0, ms = 1/2-
E. n = 3, l = 2, ml = -3, ms = 1/2+
C. n = 2, l = 1, ml = -1, ms = 1/2-
500
Convert 4.2 miles to football fields using dimensional analysis. You must show your work.
1 Football Field = 91.44 meters
1 meter = 39.37 inches
1 mile = 16000 decimeters
74 football fields.
500
Blue light has a wavelength of 450. nm.
a) Convert wavelength to meters.
b) Calculate the energy of one photon.
c = 2.998 x 108 m · s-1
h = 6.626 x 10-34 J · s
A) 4.50 E-7 m
B) 4.42 E-19 J
500
Elements often form ions when it becomes favorable towards stability. These groups often have household names to classify this phenomenon.
A) Identify the periodic table group of elements that form a 1+ cation
B) Identify the periodic table group of elements that form a 2- anion.
C) Identify the periodic table group of elements that can form ions only under extreme conditions.
A) Alkali metals
B) Chalcogens
C) Noble gases
500
Complete the following table.
| Nuclide Symbol | Atomic Number | Mass Number | Number of Protons | Number of Neutrons | Number of Electrons | Charge |
|---|---|---|---|---|---|---|
| 7934Se-2 | ? | ? | ? | ? | ? | ? |
| Nuclide Symbol | Atomic Number | Mass Number | Number of Protons | Number of Neutrons | Number of Electrons | Charge |
|---|---|---|---|---|---|---|
| 7934Se-2 | 34 | 79 | 34 | 45 | 36 (charge 2-) |
500
A mysterious, radiation emitting atom is discovered in a patient's body. It exhibits patterns similar to period 5 elements. It's ground state has 5 unpaired electrons in the same principal energy level, and its highest-energy electron has a ml of 2+.
A) Identify the element.
B) Draw the condensed electron configuration.
A) Technetium
B) [Kr] 4d5 5s2