Question 1

Which of the following elements has the highest first ionization energy?

Accepted Answer

Kr

Question 2

Which of the following transitions result from the absorption of the highest energy photon?

Accepted Answer

$$2 \rightarrow 4$$

Question 3

Using the molecular orbital ladders shown in the appendix, what is the bond order in the $$B_2$$ molecule?

Accepted Answer

2

Question 4

Which of the following equations correctly represents the equation for the electron affinity of the $$Li^+$$ ion?

Accepted Answer

$$Li^+ + e^- \rightarrow Li$$

Question 5

Consider the atoms S and Cl. As compared to S, Cl will have a ______ atomic radius and have a ______ first ionization energy.

Accepted Answer

smaller, higher

Question 6

Arrange the following atoms in the order of increasing electron affinity: Al, O, He.

Accepted Answer

O \u003c He \u003c Al

Question 7

What is the wavelength of a photon if its frequency is $$2.37 	imes 10$$^{15}$$ Hz?

Accepted Answer

$$1.27 	imes 10$$^{-7}$$ m

Question 8

What is the energy of a photon that has a wavelength of 355 nm?

Accepted Answer

$$5.60 	imes 10$$^{-19}$$ J

Question 9

In what atomic orbital will we find an electron with the following quantum numbers: $$n=2$$, $$l=1$$, $$m_l=+1/2$$?

Accepted Answer

2p

Question 10

Which one of the following sets of quantum numbers is not allowed?

Accepted Answer

2, 1, -2, 1/2

Question 11

How many lone pairs of electrons are there on the central atom in a $$ClO_2$$^-$$ ion?

Accepted Answer

2

Question 12

Which of the following species has a linear geometry around the central atom?

Accepted Answer

$$XeF_2$$

Question 13

Which of the following molecules will have a permanent dipole moment?

Accepted Answer

I and III

Question 14

This molecule has ____ sigma bonds and ____ pi bonds.

Accepted Answer

18, 9

Question 15

The electron geometry around the O atom in this molecule is ______ and the approximate value for the C-O-H bond angle is ______.

Accepted Answer

tetrahedral, 110\degree

Question 16

The hybridization for the carbon labeled x is ____ and the approximate value for the C-C-H angle around the carbon labeled y is ____?

Accepted Answer

sp$$^2$$, 120\degree

Question 17

Which of the statements about the C–C triple bond between the carbons labeled w and x in the organic molecule shown above is incorrect?

Accepted Answer

The bonding orbitals on the carbon atom labeled x are degenerate.

Question 18

Which of the following statements is incorrect?

Accepted Answer

The energy of an electron in a p atom is determined by the principal quantum number, n, only.

Question 19

Which of the following statements would be true for an electron and a neutron that have the same wavelength?

Accepted Answer

The neutron moves with a much lower velocity than the electron.

Question 20

What is the mass of a photon with a frequency of $$3.33 	imes 10$$^{15}$$ Hz?

Accepted Answer

$$2.45 	imes 10$$^{-36}$$ kg

General Chemistry: Atomic Structure, Bonding, and Periodicity – Study Guide

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