Br- (36) 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6
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Ответ:
Bromine(BR) 1s(1) 2s(2) p(6), 3s(2) p(6),3d(10)4s(2), p(5)
Explanation:
Group 7A elements have a -1 electron configuration.
Beginning at the top left and going across the rows of the periodic table provides a method for remembering the order
1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p.
Ответ: