Physics, 31.07.2019 13:00 mannyrocks1532
Give examples of the one element from the alkaline earth metal group and one from the noble gases group. include each element atomic number, atomic mass number of neutrons of valence electron number of electron shells and some common characterizes of elements from it group.
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The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island
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Give examples of the one element from the alkaline earth metal group and one from the noble gases gr...
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