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OpenStudy (anonymous):

Which of the following pairs of elements could possibly be found in the same group on the periodic table? A forms a 2+ ion, B is an alkaline earth metal. A is a noble gas, B forms a 1- ion. A has 3 valence electrons, B is a halogen. A forms a 2- ion, B has the atomic number 12.

OpenStudy (anonymous):

A forms a 2+ ion, B is an alkaline earth metal.

OpenStudy (juanpablojr):

tx yahoo!!!! @Yahoo!

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