12. Determine teh de Broglie wavelength of a neutron (. = 1.67 x 10^-27kg) that

Question

12. Determine teh de Broglie wavelength of a neutron (. = 1.67 x 10^-27kg) that has a speed of 5.0 m/s

A) 79 nm

B) 162 nm

C) 395 nm

D) 529 nm

E) 1980 nm

13. Which transition corresponds to the absorption of the photon with the longest wavelength?

A) A

B) B
C) C
D) D
E) E

14. Determine the energy of the photon involved in transition E.

A) 1.5 eV
B) 1.9 eV

C) 3.4 eV
D) 10.2 eV
E) 12.1 eV

15. Determine the wavelength of the radiation involved in transition B.

A) 291 nm
B) 364 nm
C) 487 nm
D) 652 nm
E) 1910 nm

Explanation / Answer

12) wavelength = h/p = 6.63E-34/(1.67E-27*5)=79.4 nm
so A)

13) longestwavelength means smallest energy so C)

14) E = -13.6 (1/3^2 - 1/2^2)=1.89 eV
so B)

15) E = -13.6 (1/4^2 - 1/2^2) = 2.55 eV

E = hc/lambda

2.55 = 1240/lambda

lambda = 1240/2.55=486 nm so C)

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.