| 21. | Two states were proposed for 1, 4-didehydrobenzene : singlet and triplet, with the singlet state lower in energy.
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| 22. | The singlet states of oxygen are 158 and 95 kilojoules per mole higher in energy than the triplet ground state of oxygen.
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| 23. | Statistically, there is a 25 % probability of forming a singlet state and 75 % probability of forming a triplet state.
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| 24. | The mechanism of singlet state deactivation is theorized to occur through halogen-lone pair complexation of empty 1Fl P-orbitals.
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| 25. | NMR measurements of the resonance frequency on YBCO indicated that electrons in the copper oxide superconductors are paired in spin-singlet states.
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| 26. | The decay from the excited singlet state ( S1 ) to the ground state ( S0 ) is via fluorescence ( S1 ?
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| 27. | S2 ); whereas the Q band is a result of a weak transition to the first excited singlet state ( S0 ?
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| 28. | In another meaning a closed shell configuration corresponds to state with all molecular orbitals doubly occupied or empty ( a singlet state ).
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| 29. | Photochemical or thermal activation can bring it into the singlet state, which makes it kinetically as well as thermodynamically a strong oxidant.
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| 30. | The lower lying singlet states of He 2 are A 1 ? u, B 1 ? g and C 1 ? g.
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