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All atoms of the same element have the same
b. masses.
a. protons in the nucleus of an oxygen atom.
the mass number
electrons
atomic number.
gained 2 electrons
gains electrons
17 protons, 17 electrons, and 18 neutrons.
A positive ion forms when a neutral atom
b. masses.
a. protons in the nucleus of an oxygen atom.
the mass number
electrons
atomic number.
gained 2 electrons
gains electrons
17 protons, 17 electrons, and 18 neutrons.
The O^-2 means that a neutral atom of oxygen
b. masses.
a. protons in the nucleus of an oxygen atom.
the mass number
electrons
atomic number.
gained 2 electrons
gains electrons
17 protons, 17 electrons, and 18 neutrons.
Isotopes are atoms of the same element that have different
b. masses.
a. protons in the nucleus of an oxygen atom.
the mass number
electrons
atomic number.
gained 2 electrons
gains electrons
17 protons, 17 electrons, and 18 neutrons.
Chlorine has atomic number 17 and mass number 35. It has
b. masses.
a. protons in the nucleus of an oxygen atom.
the mass number
electrons
atomic number.
gained 2 electrons
gains electrons
17 protons, 17 electrons, and 18 neutrons.
What does the number 84 in the name krypton-84 represent?
b. masses.
a. protons in the nucleus of an oxygen atom.
the mass number
electrons
atomic number.
gained 2 electrons
gains electrons
17 protons, 17 electrons, and 18 neutrons.
The atomic number of oxygen, 8, indicates that there are eight
b. masses.
a. protons in the nucleus of an oxygen atom.
the mass number
electrons
atomic number.
gained 2 electrons
gains electrons
17 protons, 17 electrons, and 18 neutrons.
Which subatomic particle balances the charge in the nucleus?
b. masses.
a. protons in the nucleus of an oxygen atom.
the mass number
electrons
atomic number.
gained 2 electrons
gains electrons
17 protons, 17 electrons, and 18 neutrons.
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