The energy level diagram for hydrogen 
-The ionization energy of hydrogen is 13.6 eV.
Definitions:
Marginal Costs
The cost incurred by producing one additional unit of a product.
Digital Entertainment
Entertainment content and experiences delivered through digital technologies, including streaming, gaming, and virtual reality.
Elasticity
An indicator of the degree to which the demand or supply for a product varies following a price change.
Price Elasticity
A measure of how much the quantity demanded of a good responds to a change in the price of that good, indicating the sensitivity of consumers to price changes.
Q22: A photon is quantum of electromagnetic radiation.
Q31: What is the symbol for a photon?<br>A)n<br>B)
Q32: The spins of all known particles are
Q40: Following Alfred Nobel's will, there are
Q70: When a neutron decays to a proton,a(n)_
Q72: The red line in the helium spectrum
Q86: When the frequency of the light is
Q111: How tightly the nucleons in a nucleus
Q115: EM waves travel at a speed that
Q143: The half-life of uranium-232 is 70 years.The