Podaj konfigurację elektronową dla atomów: magnezu, bromu i baru.
magnez Mg [2,8,2]
brom Br [2,8,18,7]
bar Ba [2,8,18,28]
₁₂Mg
1s²2s²2p⁶3s²
₃₅Br
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁵
₅₆Ba
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶6s²
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magnez Mg [2,8,2]
brom Br [2,8,18,7]
bar Ba [2,8,18,28]
₁₂Mg
1s²2s²2p⁶3s²
₃₅Br
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁵
₅₆Ba
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶6s²