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One atomic mass unit is ___.
False
False
both the relative abundance and the mass of each of the atom’s isotopes.
neutral
all of the above.
1s2-2s2-2p6-3s2-3p6-4s2-3d6
7
1/12 the mass of a carbon-12 atom.
The atomic mass of an atom is usually not a whole number because it accounts for
False
False
both the relative abundance and the mass of each of the atom’s isotopes.
neutral
all of the above.
1s2-2s2-2p6-3s2-3p6-4s2-3d6
7
1/12 the mass of a carbon-12 atom.
The number of protons and electrons changes between isotopes of a given element.
False
False
both the relative abundance and the mass of each of the atom’s isotopes.
neutral
all of the above.
1s2-2s2-2p6-3s2-3p6-4s2-3d6
7
1/12 the mass of a carbon-12 atom.
Which of the following is the configuration for iron?
False
False
both the relative abundance and the mass of each of the atom’s isotopes.
neutral
all of the above.
1s2-2s2-2p6-3s2-3p6-4s2-3d6
7
1/12 the mass of a carbon-12 atom.
What is the charge of an atom?
False
False
both the relative abundance and the mass of each of the atom’s isotopes.
neutral
all of the above.
1s2-2s2-2p6-3s2-3p6-4s2-3d6
7
1/12 the mass of a carbon-12 atom.
How many valence electrons does a chlorine atom have if its electron configuration is 1s2 2s2 2p6 3s2 3p5?
False
False
both the relative abundance and the mass of each of the atom’s isotopes.
neutral
all of the above.
1s2-2s2-2p6-3s2-3p6-4s2-3d6
7
1/12 the mass of a carbon-12 atom.
You do not need to know how many isotopes there are when determining the atomic mass of an element.
False
False
both the relative abundance and the mass of each of the atom’s isotopes.
neutral
all of the above.
1s2-2s2-2p6-3s2-3p6-4s2-3d6
7
1/12 the mass of a carbon-12 atom.
The mass of an electron is
False
False
both the relative abundance and the mass of each of the atom’s isotopes.
neutral
all of the above.
1s2-2s2-2p6-3s2-3p6-4s2-3d6
7
1/12 the mass of a carbon-12 atom.
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