29. Which is the electron configuration of an atom in the excited state? (1) 1s 2s²2p2 (2) 1s 2s22p’ (3) 1s 2s22p535

Question

29. Which is the electron configuration of an atom
in the excited state?
(1) 1s 2s²2p2
(2) 1s 2s22p’
(3) 1s 2s22p5352
(4) 1s²2s²2p%35′

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Phúc Điền 6 months 2021-09-02T08:53:23+00:00 1 Answers 4 views 0

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    0
    2021-09-02T08:54:44+00:00

    2 is right am 70 percent sure

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )