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The periodic table was created by grouping elements according to their properties. An unknown substance was shown to contain a metal element with an atomic mass around 28. With which of the following elements
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The periodic table was created by grouping elements according to their properties. An unknown substance was shown to contain a metal element with an atomic mass around 28. With which of the following elements is it most likely grouped?

A. nitrogen

B. carbon

C. boron

D. oxygen

User Olivier Tremblay
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carbon have a great day
User Fawn
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