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Protons, neutrons, and electrons.
Total number of protons and neutrons in the nucleus.
Equal numbers of protons and electrons.
Different numbers of neutrons.
Contains protons and neutrons, holding most of the atom's mass.
The element becomes unreactive.
It indicates the number of protons in the nucleus.
In ascending order of atomic number.
Metals located in the middle block of the periodic table.
8 electrons.
Electrons in the outermost shell that determine chemical behavior.
Metals are on the left, non-metals on the right.
2,8,8.
They have unstable nuclei.
Group number equals the number of outer shell electrons.
They decrease from left to right.
Protons, neutrons, and electrons.
Total number of protons and neutrons in the nucleus.
Equal number of protons and electrons.
Different numbers of neutrons.
Contains protons and neutrons, holding most of the mass.
It becomes unreactive.
In ascending order of atomic number.
Metals located in the middle of the periodic table.
They determine the chemical behavior of an element.
8 electrons.
Metals are on the left, non-metals on the right.
Number of protons in the nucleus.
They have unstable nuclei.
Arrangement of electrons in an atom.
They decrease from left to right.
It has one electron and no neutrons.
Protons, neutrons, and electrons.
Total number of protons and neutrons in the nucleus.
It has equal numbers of protons and electrons.
Different numbers of neutrons.
It contains protons and neutrons, holding most of the atom's mass.
The element becomes unreactive.
The number of protons in the nucleus.
In ascending order of atomic number.
They determine the chemical properties of an element.
A block of metals in the middle of the periodic table.
2 electrons.
Metals are on the left, non-metals on the right.
2,8,8.
They have unstable nuclei.
Group number equals the number of outer shell electrons.
They decrease from left to right.