Answer:
A=emitted B=absorbed
Explanation:
If an electron drops down from n=2 to n=1 energy is emitted, and if the electron moves up from n=1 to n=2 energy is absorbed. The amount of energy that is either absorbed or emitted is called quanta.
A) physical
B) chemical
C) chemical
D) physical
E) physical
Name for the compound HF is Hydrogen fluoride.
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The removal of trees would most likely decrease the amount of carbon in the atmosphere.
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