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• The molecules approach each other.

• As a result, these two elements are brought into proximity.

• Before two HC1 molecules can approach closely enough for interaction to be sufficiently strong, ...

• The ends of a six-carbon chain approach each other (or draw close together).

• The two points F and F' come (close) together as the solvent rate approaches its minimum value.

• The atoms are brought closer together.

• The peaks come closer and closer together.

• The particles draw (or move) closer together.