CHM151 FINAL QUESTIONS AND VERIFIED ANSWERS
What is the frequency of electromagnetic radiation when the wavelength is 5.72 x 10-7
meters.
a. 5.24 x 10^-14 s^-1
b. 1.90 x 10^-14 s^-1
c. 1.90 x 10^14 s^-1
d. 5.24 x 10^14 s^-1 - Answers - d. 5.24 x 10^14 s^-1
Which of the following elements could have the principal quantum number n=3 for one
of its valence electrons?
a. Mg
b. Fe
c. N
d. Kr - Answers - a. Mg
How many electrons in an atom of Zn could have the quantum numbers n=3, l = 2, ml=-
2,?
a. 1
b. 2
c. 5
d. 10 - Answers - b. 2
What sublevels are possible in the third energy level (n=3)?
a. s only
b. s and p
c. s, p, and d
d. s, p, d, and f - Answers - c. s, p, and d
In general, the elements with the largest ionization energies are found where on the
periodic table?
a. Top left
b. Top right
c. Bottom left
d. Bottom right - Answers - b. Top right
As you move down a column on the periodic table, the atomic radius ___________ and
the electron affinity _____________.
a. Increases, increases
b. Increase, decreases
c. Decreases, increases
d. Decreases, decreases - Answers - b. Increase, decreases
Which of the following ions could have the electron configuration
, (1s^2)(2s^2)(2p^6)(3s^2)(3p^6)(4s^2)(3d^10)(4p^6)?
a. Cl^-1
b. Br^-1
c. I^-1
d. K^+1 - Answers - b. Br^-1
How many valence electrons would be found in the Sn^+2 ion?
a. 1
b. 2
c. 6
d. 12 - Answers - b. 2
VSEPR theory would predict the geometry of PI3 to be.
a. Bent
b. Trigonal planar
c. Trigonal pyramidal
d. Tetrahedral - Answers - c. Trigonal pyramidal
Which of the following would be a linear molecule?
a. H2O
b. SI2
c. SeO2
d. CS2 - Answers - d. CS2
The halogens all have electron configurations ending in
a. s^1
b. p^3
c. p^5
d. p^6 - Answers - c. p^5
Which of the following would be expected to be nonpolar
a. HI
b. SI2
c. NI3
d. CI4 - Answers - d. CI4
Triple bonds are typically _____ and ______ than single bonds between the same
atoms.
a. Shorter, stronger
b. Longer, stronger
c. Shorter, weaker
d. Longer, weaker - Answers - a. Shorter, stronger
A 3.50 mol sample of gas occupying 1.42 liters was heated from 35.0ºC to 95.0ºC. What
is its new volume?
a. 0.523 liters
What is the frequency of electromagnetic radiation when the wavelength is 5.72 x 10-7
meters.
a. 5.24 x 10^-14 s^-1
b. 1.90 x 10^-14 s^-1
c. 1.90 x 10^14 s^-1
d. 5.24 x 10^14 s^-1 - Answers - d. 5.24 x 10^14 s^-1
Which of the following elements could have the principal quantum number n=3 for one
of its valence electrons?
a. Mg
b. Fe
c. N
d. Kr - Answers - a. Mg
How many electrons in an atom of Zn could have the quantum numbers n=3, l = 2, ml=-
2,?
a. 1
b. 2
c. 5
d. 10 - Answers - b. 2
What sublevels are possible in the third energy level (n=3)?
a. s only
b. s and p
c. s, p, and d
d. s, p, d, and f - Answers - c. s, p, and d
In general, the elements with the largest ionization energies are found where on the
periodic table?
a. Top left
b. Top right
c. Bottom left
d. Bottom right - Answers - b. Top right
As you move down a column on the periodic table, the atomic radius ___________ and
the electron affinity _____________.
a. Increases, increases
b. Increase, decreases
c. Decreases, increases
d. Decreases, decreases - Answers - b. Increase, decreases
Which of the following ions could have the electron configuration
, (1s^2)(2s^2)(2p^6)(3s^2)(3p^6)(4s^2)(3d^10)(4p^6)?
a. Cl^-1
b. Br^-1
c. I^-1
d. K^+1 - Answers - b. Br^-1
How many valence electrons would be found in the Sn^+2 ion?
a. 1
b. 2
c. 6
d. 12 - Answers - b. 2
VSEPR theory would predict the geometry of PI3 to be.
a. Bent
b. Trigonal planar
c. Trigonal pyramidal
d. Tetrahedral - Answers - c. Trigonal pyramidal
Which of the following would be a linear molecule?
a. H2O
b. SI2
c. SeO2
d. CS2 - Answers - d. CS2
The halogens all have electron configurations ending in
a. s^1
b. p^3
c. p^5
d. p^6 - Answers - c. p^5
Which of the following would be expected to be nonpolar
a. HI
b. SI2
c. NI3
d. CI4 - Answers - d. CI4
Triple bonds are typically _____ and ______ than single bonds between the same
atoms.
a. Shorter, stronger
b. Longer, stronger
c. Shorter, weaker
d. Longer, weaker - Answers - a. Shorter, stronger
A 3.50 mol sample of gas occupying 1.42 liters was heated from 35.0ºC to 95.0ºC. What
is its new volume?
a. 0.523 liters
