The lowest energy level in an atom is its
a. ionization level
b. emission level
c. absorption level
d. photon level
e. ground state
E
You might also like to view...
The angle of the Sun's rays striking Earth's surface greatly affects the
A) Earth's seasons. B) equatorial and polar regions. C) intensity of solar energy received at Earth's surface. D) distribution of solar energy—from the poles to the equator, hours of daylight, and the seasons.
A ray of light travels from a glass-to-liquid interface at an angle of 41.8°. Indices of refraction for the glass and liquid are, respectively, 1.52 and 1.63 . What is the angle of refraction for the ray moving through the liquid?
a. 23.2° c. 32.3° b. 46.0° d. 38.4°
A sample of water has a mass of 10.0 grams. What is the number of molecules of water in the 10.0 gram sample (H = 1u, O = 16u)?
a. 
b. 
c. 
d. 
e. 
According to Planck's hypothesis, the energy of an oscillator is directly proportional to its
a. amplitude. b. wavelength. c. momentum. d. frequency.