How Many Photons of Light Are Emitted When the Electrons

question 20

Multiple Choice

How many photons of light are emitted when the electrons in 10 hydrogen atoms drop from energy level 4 to 2?

• A)1
• B)10
• C)20
• D)40
• E)none of the above

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Definitions:

Double

Consisting of two equal, identical, or similar parts or things; increased or twice as much in size, quantity, or extent.

Meso-

A prefix in biology and chemistry, meaning middle or intermediate.

Off-center

Describes something that is not positioned in the middle or is away from the central point or axis.

Bin-

A prefix used in various contexts to denote two, a pair, or a binary relationship.