Elements in the same group have the same _____.
A) mass number
B) atomic number
C) number of protons
D) number of electrons
E) number of valence electrons
Correct Answer:
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Q35: The Cl − ion contains
Q36: How many protons, neutrons, and electrons are
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Q41: Which of these elements is a metalloid?
A)
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A)P
B)I
C)N
D)K
E)Cl
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A)
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