23.Which of the following statements is\/are true? I. An excited atom can return to its ground stat

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23.tWhich of the following statements is/are true? I. An excited atom can return to its ground state by absorbing electromagnetic radiation.

Ⅱ. The ene啊 of an atom is increased when electromagnetic radiation is emitted from it.

III.tThe energy of electromagnetic radiation increases as its frequency increases.

IV.tAn electron in the n = 4 state in the hydrogen atom can go to the n = 2 state by emitting electromagnetic radiation at the appropriate frequency.

V.tThe frequency and wavelength of electromagnetic radiation are inversely proportional to each other.
(A) III,v
(B)Ⅱ, III, IV
(C) I, Ⅱ, IV
(D) I, Ⅱ, III
(E)III,IV,V

參考答案

答案：E

統計：A:0,B:0,C:0,D:0,E:2

難度：計算中

上一篇 : 22.The reaction A→B + C is known to be zero order in A with a rate constant of 4.8 x 10-2 mol\/L •
下一篇 : 24.How many electrons can be described by the quantum numbers n = 4, l = 4, ml= 1? (A) 14(B)6(C)10(D

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