Where would you find the element with the least mass in the periodic table?
A. Period 1, group 18
B. Period 7, group 1
C. Period 3, group 2
D. Period 1, group 1
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Home » Chemistry » Where would you find the element with the least mass in the periodic table? A. Period 1, group 18 B. Period 7, group 1 C. Period 3, group 2 D. Period 1, group 1