An atom that has 20 protons and 20 neutrons in its nucleus has this atomic number
A) 20.
B) 40.
C) 400.
D) Cannot determine because not enough information is given.
Correct Answer:
Verified
Q7: Atoms of the same element that have
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Q9: Native elements are those elements that
A) Do
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Q13: The internal regular arrangement of ions or
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A) Pieces of other rocks
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A) Expand when wet, shrink when
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