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What is the charge of an atom?
1s2-2s2-2p6-3s2-3p6-4s2-3d6
False
positive
neutral
False
7
both the relative abundance and the mass of each of the atom’s isotopes.
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.
1s2-2s2-2p6-3s2-3p6-4s2-3d6
False
positive
neutral
False
7
both the relative abundance and the mass of each of the atom’s isotopes.
1/12 the mass of a carbon-12 atom.
What is the charge of the nucleus of an atom?
1s2-2s2-2p6-3s2-3p6-4s2-3d6
False
positive
neutral
False
7
both the relative abundance and the mass of each of the atom’s isotopes.
1/12 the mass of a carbon-12 atom.
Which of the following is the configuration for iron?
1s2-2s2-2p6-3s2-3p6-4s2-3d6
False
positive
neutral
False
7
both the relative abundance and the mass of each of the atom’s isotopes.
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
1s2-2s2-2p6-3s2-3p6-4s2-3d6
False
positive
neutral
False
7
both the relative abundance and the mass of each of the atom’s isotopes.
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?
1s2-2s2-2p6-3s2-3p6-4s2-3d6
False
positive
neutral
False
7
both the relative abundance and the mass of each of the atom’s isotopes.
1/12 the mass of a carbon-12 atom.
One atomic mass unit is ___.
1s2-2s2-2p6-3s2-3p6-4s2-3d6
False
positive
neutral
False
7
both the relative abundance and the mass of each of the atom’s isotopes.
1/12 the mass of a carbon-12 atom.
The number of protons and electrons changes between isotopes of a given element.
1s2-2s2-2p6-3s2-3p6-4s2-3d6
False
positive
neutral
False
7
both the relative abundance and the mass of each of the atom’s isotopes.
1/12 the mass of a carbon-12 atom.
Check it!