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How many valence electrons does a neutral atom of aluminum have?
2
neon
8
5
silicon
It becomes more stable
3
argon
Which of these atoms have a total of fourteen electrons?
2
neon
8
5
silicon
It becomes more stable
3
argon
If an atom gains some extra electrons so that its valence shell becomes full, what happens to the atom?
2
neon
8
5
silicon
It becomes more stable
3
argon
If oxygen gained two electrons how many electrons would be in its outer shell?
2
neon
8
5
silicon
It becomes more stable
3
argon
Which of these elements has the most chemically non-reactive atoms?
2
neon
8
5
silicon
It becomes more stable
3
argon
Using the periodic table of elements, how many valence electrons would helium have?
2
neon
8
5
silicon
It becomes more stable
3
argon
If a particular atom of an element has five protons a neutral atom of this element would have ________ electrons.
2
neon
8
5
silicon
It becomes more stable
3
argon
If calcium lost two electrons it would have the same number of electrons as
2
neon
8
5
silicon
It becomes more stable
3
argon
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