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Why are there only two elements in the first period of the periodic table?(1 point)
because the first two elements both start with H and are grouped together
because the next elements have other things in common and they need to be arranged together
because only two electrons can fit in the first orbit around the nucleus, and each period on the table is organized by number of orbits
because each row increases in atomic mass by a specific number, so anything over five is in the second row
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Why are there only two elements in the first period of the periodic table?(1 point)
because the fi...
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