Which of the following pairs are isotopes?
A) "Ca₂+ and Mg2+"
B) "199Hg and 200Hg"
C) "18O and 19F"
D) "238U and 238Np"
Correct Answer:
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Q36: Which of the following elements is a
Q37: Which of the following elements is an
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Q40: Which of the following elements may have
Q42: The law of constant composition states that
Q43: Which has more electrons?
A) Br-
B) Sr 2+
C)
Q44: Which of the following has the highest
Q45: Which element, isotope, or ion listed below
Q46: Which cation has the atomic number of
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