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WorksheetsAverage Atomic Mass
Total questions: 8
Worksheet time: 7mins
The atomic mass of an element is the ___.
average of the mass number and the atomic number for the element
weighted average of the masses of the isotopes of the element
total mass of the isotopes of the element
total number of subatomic particles in the nucleus
The atomic mass of an element depends upon the ___.
relative abundance of protons in that element
mass and relative abundance of each isotope of that element
mass of each isotope of that element
mass of each electron in that element
Which of the following is necessary to calculate the atomic mass of an element?
the atomic mass of carbon-12
the atomic number of the element
the relative masses of the element's protons and neutrons
the masses of each isotope of the element
Chlorine has two naturally occurring isotopes, Cl-35 and Cl-37, The atomic mass of chlorine is 35.45. Which of these two isotopes of chlorine is more abundant?
Cl-35
Cl-37
Cannot be determined from the information provided.
The box for an element from the periodic table is shown. Which is the atomic mass?
A
B
C
D
The box for an element from the periodic table is shown. Which is the atomic number?
A
B
C
D
What does the 1.0079 stand for?
atomic number
hydrogen
atomic mass
mass number
Magnesium exists as the three isotopes shown. What is the average atomic mass of magnesium?
20.74 amu
22.56 amu
18.39 amu
24.31
