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For Each of the Elements Below, There Are Only Two

Question 62

Multiple Choice

For each of the elements below, there are only two naturally occurring isotopes. Using information in your periodic table, identify the pair in which the lighter isotope is the more abundant one.


A) (6Li and 7Li)
B) (79Br and 81Br)
C) (10B and 11B)
D) (191Ir and 193Ir)
E) (50V and 51V)

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