An atom has an atomic number of 19 and a mass number of 39. This atom will have ________ neutrons.
A) 19
B) 20
C) 39
D) 58
Correct Answer:
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Q1: Subatomic particles located around the nucleus of
Q3: An atom of chlorine has 17 protons
Q4: In an x-ray film of the skeletal
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Q6: Isotopes of the same element have
A) the
Q7: Electrons
A) comprise the majority of the mass
Q8: In ionic bonding,
A) only non-polar molecules are
Q9: Which of the following best describes a
Q10: The four most abundant elements in the
Q11: A neutral atom will become a cation
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