Which element has the electron configuration of 1s2 2s2 2p6 3s2 3p1 ?
Which element has the electron configuration of 1s2 2s2 2p6 3s2 3p1 ? #1s22s22p63s23p1
Which element has the electron configuration of 1s2 2s2 2p6 3s2 3p1 ? #1s22s22p63s23p1
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