Electrons in atoms and molecules can change energy levels by emitting

1.	Electrons in atoms and molecules can change energy levels by emitting or absorbing
A.	Protons
B.	Photons
C.	electrons
D.	All of these
Answer» C. electrons

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Electrons in atoms and molecules can change energy levels by emitting or absorbing
Atom of any element is

Electrons in atoms and molecules can change energy levels by emitting or absorbing

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