The temperature at which water freezes is the same as the temperature at which
A) ice melts.
B) water boils.
C) both of these
D) neither of these
Answer: A
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An atom has completely filled inner shells and a single valence electron in an excited p state. The filled inner shells have an orbital momentum equal to zero. What is the magnitude of the orbital angular momentum L of the atom?
A) 1.0? B) 1.2? C) 1.4? D) 1.7? E) 2.0?
What happens when the index of refraction is equal to 1?
a. No refraction occurs. b. Light cannot pass into the material. c. An average amount of refraction takes place. d. The maximum possible refraction occurs. e. The index of refraction cannot be calculated for this material.
Size of the Nucleus: Calculate the estimated nuclear radius of 
Sr?
A. 4.0 × 10-15 m B. 1.2 × 10-15 m C. 1.1 × 10-13 m D. 5.4 × 10-15 m E. 3.3 × 10-13 m
To make Helium-4 you need what?
A.) 4 protons. B.) 2 protons and 2 neutrons. C.) 2 protons and 4 neutrons. D.) 4 neutrons. E.) 1 proton and 3 neutrons.