Name three element which need one electron to complete their octet
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All the helogens (elements of group 7 A) need one electron to complete their octet such as Flourine, Chlorine, Bromine etc
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An octet is a group of eight, and the elements that contain them are any atoms that have their s and p sublevels in highest-occupied energy level. Phosphorus Potassium Potassium 1s2 2s2 2p6 3s2 3p1 1s2 2s2 2p6 3s2 3p2 1s2 2s2 2p6 3s2 3p3 1s2 2s2 2p6 3s2 3p4 1s2 2s2 2p6 3s2 3p5
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