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24. A quantum is a finite amount of energy gained or lost by an atom.- F?

25. An atom is in an excited state when it has its lowest energy.- F

26. The Bohr model of the atom shows electrons in areas called energy levels.- F?

27. The principal quantum number indicates the main energy level around the nucleus.- T

28. Electrons in pairs have opposite spin.- T

30. When electrons move to lower levels they lose energy.- T

31. Visible light is a form of electromagnetic radiation.- T


  • Chemistry -

    24 very poorly worded, my guess they want it to be true.
    26F, probably, poorly worded. The original model was F, but was revised.
    others correct.

  • Chemistry -

    Thanks so much!


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