Atomic Statistics Chart Worksheet
Name __________________________________
Date ___________ Period __________
1) Define the following terms:
Atomic Number:
Mass Number:
Atomic Mass:
Isotope:
Isotope Name:
Nuclear Symbol:
2) Give the nuclear symbol for an atom with 9 protons and 10 neutrons: __________________
3) Give the nuclear symbol for an atom with atomic number 72 and 100 neutrons: _________________
4) Write the isotope name for an element with 20 protons and 21 neutrons: ___________________
5) Complete this chart for the following NEUTRAL atoms using your periodic table:
Element Atomic # Protons
Si
B
Electrons
14
Neutrons
Mass Number
Isotope Name
10
19
235
84
Kr-84
Nuclear Symbol
15
5
9
92
48
146
U
131
54Xe
6) Which two of the above would be an example of isotopes?
7) Explain the difference between "atomic mass" and "mass number".
8) Complete this chart:
Particle
proton
neutron
electron
Charge
Mass in amu
Location in Atom
Discovered by
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Atomic Statistics Chart Worksheet
Name __________________________________
Date ___________ Period __________
Definitions:
1) ___________________ Represents the number of protons in an atom’s nucleus.
2) ___________________ Atoms of the same element with different masses.
3) ___________________ Total of protons and neutrons in an atom.
4) ___________________ Weighted average of the different isotopic masses of an element’s atoms
5) ___________________ Subatomic particle with a mass of 1 AMU and a charge of +1
6) ___________________ Subatomic particle with a mass of 0 AMU and a charge of –1
7) Complete this chart for the following NEUTRAL atoms using your periodic table:
Element
Nuclear Symbol Electrons
Protons
Neutrons
Isotope Name
Atomic Number Mass Number
Xenon
133
Iodine
73
50
70
79
200
80
11
200
11
8) Copper has 2 main isotopes, Cu-63 and Cu-65. Look up copper's atomic mass on the periodic
table.
a) Which isotope, Cu-63 or Cu-65, is most abundant in nature?
b) Explain how you can tell.
9) Boron has 2 main isotopes, Boron-10 and Boron-11. Which isotope is more abundant in nature and
how can you tell?
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