Which of the following explains why electrons must arrange themselves in atoms with no more than two per energy level, thus making chemistry possible?
A) the exclusion principle
B) the uncertainty principle
C) the law of conservation of energy
D) the law of conservation of angular momentum
E) the electromagnetic force law
A) the exclusion principle
You might also like to view...
Fluid Flow: Water flows out of a large reservoir through 5.0-cm diameter pipe. The pipe connects to a 3.0-cm diameter pipe that is open to the atmosphere, as shown in the figure. What is the speed of the water in the 5.0-cm pipe? Treat the water as an ideal incompressible fluid.
A. 2.3 m/s B. 3.2 m/s C. 3.9 m/s D. 8.9 m/s E. 10 m/s
In a single slit diffraction experiment, the width of the slit is 3.1 x 10-5 m and the distance from the slit to the screen is 2.2 m
If the beam of light of wavelength 600 nm passes through the slit and forms a diffraction pattern on the screen, what is the linear distance on the screen from the center of the diffraction pattern to the second dark fringe? A) 3.9 cm B) 4.2 cm C) 6.3 cm D) 2.1 cm E) 8.5 cm
Assume everyone in the United States consumes one soft drink in an aluminum can every two days. If there are 270 million Americans, about how many tons of aluminum need to be recycled each year if each can weighs 1/15 pound and one ton = 2 000 pounds?
a. 450 000 tons b. 1.6 million tons c. 3.3 million tons d. 0.82 million tons e. 410 000 tons
After an elastic collision of two balls, the kinetic energies of the two balls are measured to be 12J and 24J. What can be said about the kinetic energy of the two balls before the collision?
a. nothing—not enough information is given b. the balls had the same energies, 12J and 24J respectively c. the total kinetic energy of the two balls was 36J d. none of the above