Using the Periodic Table Name ________________________
1. What is the atomic number of
Oxygen (O): ________ Xenon (Xe): 54 Iron(Fe):
_______
2. What is the Average Atomic Mass
of
Boron (B): ______ Californium: (Cf) 251.080 Sodium (Na): _____
Don’t round for atomic mass
3. How many protons are there in an
atom of
Carbon (C): _____ Arsenic
(As): 33 Plutonium (Pu): ______
4. How many electrons are there in
an atom of
Copper (Cu): ______ Fluorine (F): 9 Thorium
(Th): ________
5. Use the Atomic Mass value of the following
elements to predict its most
common isotope
Bismuth (Bi): _______ Iridium (Ir): _________
Chromium (Cr): 52 to get this,
round atomic mass 51.9961 to the nearest whole number
Cadmium
(Cd):_____ Potassium (K):
________ Barium (Ba): _________
6. Use the back side of your Periodic Table to
look up the actual most common isotope of the
following elements:
Bismuth (Bi): _______ Iridium (Ir): _________
Chromium (Cr): ______
Cadmium
(Cd):_____ Potassium (K):
________ Barium (Ba): 138
7. Use the information from #6 to
determine how many neutrons there
are in an atom of
the most common isotope of
Lead (Pb): _______ Iridium
(Ir):
_________ Chromium (Cr): ______
Cadmium (Cd):_____ Potassium (K): ________ Barium (Ba): 182 238 – 56 =
182 (atomic mass – atomic number)
8. Which primary particle “glues” the
nucleus together? ________________
9. What is the name of the atom that has
14 protons? Hint: what would it’s atomic number be?
10. What is the name to the atom that 79
electrons? Hint: what would it’s atomic number be?
11. What name would be given to an atom that
has 70 protons and 105 neutrons? Hint: what would it’s
atomic number be?
What
is the most common isotope of this element? _________________
12. What name would be given to an atom that
has 80 protons and 122 neutrons? _________
What
is the most common isotope of this element? _________________
12. What is the name of the only atom that
usually has no neutrons? Hint what would its atomic
mass be?
Use the diagram below to answer
questions 13 - 17
13. What is the atomic number of the atom
depicted above? Count the protons
14. What is the atomic mass of the atom depicted
above? Count the nucleons
15. Which element does this diagram depict? Hint: what would it’s atomic number be?
16. Is this the most common isotope of the element
depicted above? Look at the back side of your Periodic
Table
17. Does the diagram above show a neutral atom, a
positive ion, or a negative ion? How does the number
of protons compare to the number of electrons?
18. If you removed an electron from a lead atom, it would be Hint: it would have one too many protons
a) a different isotope of lead b) Thallium
c) a positive lead ion d) a negative lead ion
19. If you removed a proton and an electron from a lead atom, it would be ___________
a) a different isotope of lead b) Thallium
c) a positive lead ion d) a negative lead ion
20. If you somehow removed a neutron from a lead atom, it would be Hint: it would still have 82 protons
a) a different isotope of lead b) Thallium
c) a positive lead ion d) a
negative lead ion