1) Sr2+ = 3d¹⁰ 4s² 4p⁶
2) Kr = 3d¹⁰ 4s² 4p⁶
3) Br = 4s² 3d¹⁰ 4p⁵
4) Rb = 5s¹
Ответ: Sr2+ и Kr
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1) Sr2+ = 3d¹⁰ 4s² 4p⁶
2) Kr = 3d¹⁰ 4s² 4p⁶
3) Br = 4s² 3d¹⁰ 4p⁵
4) Rb = 5s¹
Ответ: Sr2+ и Kr