how many elements are there in period 2
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2
Answer:
Period 2 elements obey the octet rule in that they need eight electrons to complete their valence shell, where at most eight electrons can be accommodated: two in the 2s orbital and six in the 2p subshell.
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8 elements
Answer:
There are 8 elements in period 2 because all those elements have electrons in the second shell and no electrons in the third shell
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