What happens when an electron falls to a lower energy level? question options: the electron absorbs energy. the electron releases energy. the electron takes on a higher frequency.

If you're in K12, then the answer is "the electron releases energy".

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explanation:

covalent bonds

consist of pairs of electrons shared by two atoms, and bind the atoms to fixed orientation and requre high energies to break them

ionic bonds

when two atoms differ considerably in their electronegativity, then one of the atoms will lose its electron to the other atom. this results in a positively charged ion(cation) and a negatively charged ion (anion)

gas

explanation:

smoke is the matter of a gas