Experiments use random assignment to avoid which of the following? a. random selectionb. carryover effectsc. selection effectsd. demand characteristics

Selection effects c.

Molecules result from the covalent bonding of two or more elements' atoms. Covalent bonds are strong bonds in which electrons circling the atomic nucleus are shared. The nature of the covalent bond is determined by the number of electrons shared and the nature of the two elements sharing the bond.

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