- In empty space, which form of electromagnetic radiation travels the fastest?
Your answer:
light
radio waves
X-rays
all electromagnetic radiation travels at the same speed
- When an electron in an atom undergoes a transition from a higher to lower energy state it:
Your answer:
emits energy as a photon with a specific frequency.
absorbs energy as a photon with a specific frequency.
emits energy as a photon with a random frequency.
absorbs energy as a photon with a random frequency
- The various shapes of atomic orbitals can be classified into how many main types?
Your answer:
4
7
16
32
- The Pauli exclusion principle states:
Your answer:
an electron may possess only one of two types of spin.
the state of a hydrogen atom depends on the energy it possesses; a specific energy must be provided to ionize a ground-state atom.
there is a 90% probability that one or more electrons occupies an orbital's space.
no more than two electrons may occupy any orbital and their spins must be paired.
- Which one of the following statements concerning ionization energy is NOT true?
Your answer:
Increasingly greater energies are required to remove more than one electron from the atom structure.
Ionization energy generally decreases from top to bottom within a group of the Periodic Table.
The low ionization energies of elements at the lower left of the Periodic Table account for their metallic character.
The ionization energies of the Noble gases are the lowest of any group in the Periodic Table.
- Chemical bonding that results from the transfer of one or more electrons from one atom structure to another is known as:
Your answer:
ionic.
covalent.
Van der Waals.
metallic.
- Chemical bonding that results from the sharing of one or more pairs of electrons between atoms is known as:
Your answer:
ionic.
covalent.
Van der Waals.
metallic.
- Radicals and biradicals are chemical species that:
Your answer:
possess an odd number of valence electrons.
possess an odd number of total electrons.
are able to expand their octets.
protect materials, including human tissues, from damage by acting as an antioxidant.
- A____________ is an electron pair acceptor; a ____________ is an electron pair donor.
Your answer:
radical; biradical
Lewis acid; Lewis base
resonance structure; nonresonance structure
double bond; triple bond
- The ability of an atom to attract electrons to itself when it's part of a molecule is called:
Your answer:
electron affinity.
electronegativity.
resonance.
bipolar disorder.
- The name of the quantum number that describes the shape of the orbital an electron occupies is:
Your answer:
n - principal quantum number.
l - azimuthal quantum number.
m(l) - magnetic quantum number.
m(s) - magnetic spin number.
- The name of the quantum number that describes the rotational motion direction of an electron in an orbital is:
Your answer:
n - principal quantum number.
l - azimuthal quantum number.
m(l) - magnetic quantum number.
m(s) - magnetic spin number.
- The name of the quantum number that describes the orientation of the orbital is:
Your answer:
n - principal quantum number.
l - azimuthal quantum number.
m(l) - magnetic quantum number.
m(s) - magnetic spin number.
- The name of the quantum number that describes the energy level shell an electron occupies is:
Your answer:
n - principal quantum number.
l - azimuthal quantum number.
m(l) - magnetic quantum number.
m(s) - magnetic spin number.
- Write the electron configurations for atoms of the element cadmium (atomic number 48). How many total electrons are in the 4d subshell?
Your answer:
2
6
10
14
- Write the electron configurations for atoms of the element mercury (atomic number 80). How many total electrons are in the 5d subshell?
Your answer:
2
6
10
14
- Radio waves for the FM station "93.9" are generated at 93.9 MHz (megahertz). What is the wavelength (in meters) of these transmissions?
Your answer:
93,900,000
0.00000939
3.19
319,000,000
- A true neon lamp emits 550-nm (nanometer) green-yellow light. How much energy (J) is emitted by an excited neon atom when it generates a photon?
Your answer:
5.50e-7
6.63e-34
5.45e14
3.62e-19
- Write the Lewis symbol for carbon. How many unpaired electrons are present?
Your answer:
zero
1
2
4
- Write the Lewis symbol for the chloride ION. How many unpaired electrons are present?
Your answer:
zero
2
4
8
- Write the Lewis structure for carbon tetrachloride. How many total valence electrons are present?
Your answer:
4
7
32
36
- Write the Lewis structure for ozone (O3). Ozone (O3) is a resonance hybrid structure. True or false?
Your answer:
TrueFalse
- When Na and F combine they form an ionic bond. True or false?
Your answer:
TrueFalse
- When N and O combine they form an ionic bond. True or false?
Your answer:
TrueFalse
- When Ca and Cl combine they form an ionic bond. True or false?
Your answer:
TrueFalse
- A neon lamp glows with a characteristic color because the atoms emit photons while in the ground state. True or false?
Your answer:
TrueFalse
- Graphite is soft and diamond is hard because of the differences in bond type and orientation. True or false?
Your answer:
TrueFalse
- The violet line in the hydrogen spectrum is at 434.0 nm. The principal quantum number of the orbital corresponding to the upper energy state of the electron that produces a photon of this wavelenghth is 5 and the lower energy state corresponding to this transition is n = 2. True or false?
Your answer:
TrueFalse