Which is a characteristic of condensation polymerization?

monomers are generally alkenes.
the reaction rarely produces a product.
each monomer has more than one functional group.
the polymer contains all the atoms in the monomer units.

The best and most correct answer among the choices provided by the question is the third choice " Each monomer has more than one functional group."
Condensation polymers are any kind of polymers formed through a condensationreaction—where molecules join together—losing small molecules as by-products such as water or methanol, as opposed to addition polymers which involve the reaction of unsaturated monomers.

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All the elements are arranged by melting points on the periodic table. in row they go from metals to gasses. in the row from sodium to argon, sodium is more reactive than the one on its right, magnesium.

The answer is celsius