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Chemistry, 24.08.2019 21:00 mainray1792

Which group of elements are considered to be in the same family?
a. helium, neon and argon
b. potassium, calcium and scandium
c. manganese, iron and cobalt
d. hydrogen and helium

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Which group of elements are considered to be in the same family?
a. helium, neon and argon
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