Station One:
1. How many electrons are present in a chromium-52
atom?
a. 52
b. 24
c. 28
d. 51
2. How many protons are present in a chromium-52 atom?
a. 52
b. 24
c. 28
d. 51
3. How many neutrons are present in a chromium-52
atom?
a. 52
b. 24
c. 28
d. 51
Station Two:
4. Give the number of protons, neutrons, and electrons in
the 106Pd2+ ion.
a. 46 protons, 60 neutrons, 48 electrons
b. 46 protons, 106 neutrons, 44 electrons
c. 106 protons, 60 neutrons, 48 electrons
d. 46 protons, 60 neutrons, 44 electrons
5. You have a neutral atom that has atomic number 77
and a mass number of 192. How many protons,
neutrons, and electrons does it have?
a. 77 protons, 115 neutrons, 77 electrons
b. 77 protons, 192 neutrons, 192 electrons
c. 192 protons, 115 neutrons, 77 electrons
d. 77 protons, 77 neutrons, 77 electrons
Station Three:
6. How many paired electrons are in a germanium atom?
a. 32 electrons
b. 30 electrons
c. 28 electrons
d. 26 electrons
7. How many unpaired electrons are in this atom?
a. 0 electrons
b. 2 electrons
c. 4 electrons
d. 6 electrons
8. Give the orbital filling diagram for germanium
(shorthand okay). CHECK YOUR ANSWER ON THE KEY
PROVIDED, AND MARK “A” ON I-RESPOND.
[Ar]
4s
3d
4p
Station Four:
9. Electrons will go to the place of ________ energy first.
This is attributed to the ________________.
a. Lowest; Pauli exclusion principle
b. Highest; Pauli exclusion principle
c. Lowest; aufbau principle
d. Highest; aufbau principle
10. Electrons who share an orbital must spin
oppositely. Which rule is this?
a. aufbau principle
b. Pauli exclusion principle
c. Hund’s rule
d. Heisenberg uncertainty principle
Station Five:
11. Give the number of protons, neutrons, and
electrons in the 127I-1 ion.
a. 53 protons, 74 neutrons, 52 electrons
b. 53 protons, 127 neutrons, 55 electrons
c. 53 protons, 127 neutrons, 52 electrons
d. 53 protons, 74 neutrons, 55 electrons
Station Six:
12. In order for an electron to move away from the
nucleus to an outer energy level, it must _____ energy.
a. gain
b. lose
c. transfer
13. If an electron falls back toward the nucleus, we
observe a change in energy that corresponds to colors
of different wavelength. What happens to the energy of
the electron?
a. Absorbed by the electron
b. Emitted by the electron
c. Transferred from one electron to another
14.
The visible spectrum ranges in color from red to
violet. Which has the longest wavelength?
a. Red
b. Green
c. Blue
d. Violet
Station Seven:
15. Atoms of the same element that vary in number of
neutrons and therefore also in mass are called ??
a. Atomic number
b. Ion
c. Isotope
d. Mass Number
16. Atoms of an element that carry a charge due to
either a gain or loss of electrons are known as ??
a. Atomic number
b. Ion
c. Isotope
d. Mass Number
17. When an atom gains electrons, it will have a ___
charge.
a. Positive
b. Negative
c. Neutral
18. Which particle always remains the same for the
same element?
a. Proton
b. Neutron
c. Electron
Station Eight:
19.
The number of protons is given by the ??
a. Atomic number
b. Ion
c. Charge
d. Mass Number
20. The sum of the number of protons plus the number
of neutrons is called the ??
a. Atomic number
b. Ion
c. Charge
d. Mass Number
Station Nine:
21. If an element consists of 60.1% of atoms with a
mass of 68.926 amu and the remainder of the atoms
have a mass of 70.925 amu, what is the atomic mass of
the element?
a. 69.72 amu
b. 6,972 amu
c. 69.93 amu
d. 112.3 amu
22. Calculate the atomic mass of an element. The
three isotopes occur in the following abundances:
20X=90.92%, 21X=0.257% and 22X=8.82%
a. 20.18 amu
b. 45.71 amu
c. 25.52 amu
d. 2,017.8 amu
Station Ten:
23. Give the orbital filling diagram and the full electron
configuration for tin. CHECK YOUR ANSWER ON THE
PROVIDED KEY, AND MARK “A” ON I-RESPOND.
Station Eleven:
24.
In the orbital diagram shown, which rule is broken?
a. aufbau principle
b. Pauli’s exclusion principle
c. Hund’s rule
d. No rule is broken.
25.
In the orbital diagram shown, which rule is broken?
a. aufbau principle
b. Pauli’s exclusion principle
c. Hund’s rule
d. No rule is broken.
Station Twelve:
26. Draw and name JJ Thomson’s model of the atom.
What subatomic particle is his significant addition to the
theory?
a. Bohr model; proton
b. Plum pudding model; neutron
c. Plum pudding model; electron
d. Bohr model; nucleus
27. Sketch Rutherford’s Gold Foil Experiment set up.
What did he expect to happen?
a. Particles would move at right angles through the
foil.
b. Particles would move straight through the foil.
c. Particles would hit the foil and fall to the floor.
d. Particles would hit the foil and bounce back
towards him.
28. What was the actual outcome of the Gold Foil
experiment?
a. Particles would move at right angles through the
foil.
b. Particles would move straight through the foil.
c. Particles would hit the foil and fall to the floor.
d. Some particles would hit the foil and bounce back
towards him.