Which block is manganese (Mn) located in?
s-block
f-block
d-block
p-block
What does the Pauli Exclusion Principle deal with?
electron spin
none of these are correct
electron speed
electron charge
What is an orbital?
The rings around an atom
The charge of an atom
The space between electrons
The location of an electron
Magnesium has three common isotopes. Based on its average atomic mass, which is the most common?
Magnesium-12
Magnesium-26
Magnesium-25
Magnesium-24
Which of the following was the instrument used for the discovery of the electron?
Gold foil experiment
Cathode ray tube
Alpha particle emitter
Oil drop apparatus
Which rule states that electrons will go into empty orbitals of the same energy before entering into an orbital with an electron present?
Aufbau Principle
Pauli Exclusion Principle
Hand's Rule
Hund's Rule
What equation is lambda = h/mv?
de Broglie equation
Davisson-Germer equation
Planck equation
Einstein equation
The mass number of an atom indicates:
the number of neutrons.
the total number of protons and neutrons.
the number of protons.
the total number of protons and electrons.
Which of the following has a positive charge and a mass of one amu?
Chemical bonds
Electrons
Protons
Neutrons
What is the largest principal quantum number that a calcium electron can have?
n = 0
n = 1
n = 4
n = 2
How are isotopes of the same element similar?
They are equally abundant in nature.
They have the same mass.
They have the same number of neutrons.
They have the same number of protons.
The Heisenberg uncertainty principle is concerned with what two properties?
momentum and mass
mass and velocity
position and velocity
momentum and position
Which of the rules discussed in this lesson relates to the spin of electron in an orbital?
None of these discussed spin
Hund's rule
Aufbau principle
Pauli exclusion principle
What is the name of the constant in the Heisenberg Uncertainty Principle equation?
Einstein's
Planck's
Heisenberg's
de Broglie
A piece of aluminum foil has a mass of 27 grams. About how many atoms does this contain? (Aluminum has a molecular mass of 27 g/mol.)
1.20 x 10^24 atoms
6.02 x 10^23 atoms
3.01 x 10^23 atoms
27 atoms
How many electrons can fit into the p subshell?
5
2
10
6
What is the term for the number of peaks that pass through a fixed spot during a given time interval?
wavespeed
frequency
wavelength
Planck's constant
Which of the following is an example of when an electron absorbs energy?
When it goes from the second energy level to the fourth.
When an electron releases a photon.
When it maintains constant energy and doesn't change .
When it goes from the fourth energy level to the first.
A computer chip contains 1.20 x 10^23 atoms of silicon. What is its mass? (The molecular mass of silicon is 28 g/mol.)
2 grams
5.6 grams
14 grams
6.02 x 10^23 grams
What is the main point of the de Broglie equation?
matter only behaves like a particle
Einstein's theory of relativity was incorrect
matter has wave-like properties
the position of light cannot be precisely determined
Based on Avogadro's number, which of the following is FALSE? (For reference: the molecular mass of helium is 4 g, the molecular mass of carbon is 12 g.)
One mole of helium atoms has a mass of 4 grams.
One mole of carbon atoms has a mass of 6 grams.
A mole is 6.02 × 1023.
The mole is the number of amu in a gram.