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Chemistry, 31.08.2019 09:50 leshayk91

An atom of oxygen is in an excited state. when an electron in this atom moves from the third shell to the second shell, energy is
(1) emitted by the nucleus
(2) emitted by the electron
(3) absorbed by the nucleus
(4) absorbed by the electron

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An atom of oxygen is in an excited state. when an electron in this atom moves from the third shell t...

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