Geography, 11.02.2020 00:53 newyorkvincetti

If you heat up a bar of iron in a fire until it glows, the light emitted from the iron is caused by ?

a. an increase in the atomic number of the iron atoms
b. a reorganization of protons and neutrons in the atomic nucleus
c. a chemical reaction with oxygen free radicals in the air
d. residual fire that is stuck to the metal
e. high energy electrons dropping back into a lower-energy shell

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