What is this element?
a. beryllium b. nitrogen
c. lithium d. carbon
what is...
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Chemistry, 15.10.2019 23:50 hncriciacheichi
What is this element?
a. beryllium b. nitrogen
c. lithium d. carbon
what is the mass number for the element above?
a.10 b.7 c.6 d.4
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Answers: 3
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