Potassium Iodide (chemical formula: KI) has a face-centered cubic structure (just like sodium chloride). If the distance between crystal planes is d = 0.353 nm and X-rays of wavelength l = 0.093 4 nm are used, what is the smallest angle q at which a diffraction maximum may be obtained?
a. 9.92°
b. 7.60°
c. 13.3°
d. 15.5°
e. 6.52°
B
You might also like to view...
The diagram above represents energy levels in a hydrogen atom. Each level is labeled with its energy (above the ground state of Level 1) in units of electron/volts (eV). The labeled transitions represent an electron moving between energy levels. Which transition represents an electron that absorbs a photon with 10.2 eV of energy?
A) A B) B C) C D) D E) E
The amount of gravitational force that acts on a space vehicle while in Earth orbit is
A) nearly zero. B) nearly as much as the vehicle's weight on Earth's surface. C) the same as the vehicle's weight on Earth's surface.
Liquid crystal displays make use of __________
Fill in the blank(s) with correct word
The resistance of a 50 watt bulb is ________ that of a 100 watt bulb, if both run on the same voltage.
A. double B. one half C. four times D. one fourth