10. An excited hydrogen atom with an electron in the n = 5 state emits light having a frequency of 6.90 × 1014 s-1 . The principal quantum level for the final state in this electronic transition is calculated to be___________ . (A) 5(B) 4(C)3(D) 2 (E)1 2

13. Which of the following statements is correct? (A) The removal of one electron in O2 decreases its bond order to 1.5. (B) The bond strength of OF is expected to weaken as an electron is removed to form the positive charged ion.(C)The bond strength of B2 is expected to increase as an electron is removed to form the positive charged ion. (D)CO+ is diamagnetic. (E)The bond order of N2+ is 2.5.

10. An excited hydrogen atom with an electron in the n = 5 state emits light having a frequency of 6.90 × 10¹⁴ s^-1. The principal quantum level for the final state in this electronic transition is calculated to be___________ .
(A) 5
(B) 4
(C)3
(D) 2
(E)1 2

其他試題