Ionic and Covalent Bonding

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The formula of a copper-containing compound must include

As phosphorus gains electrons, which of the following is true?

An oxygen molecule has a double bond because

If a substance has a low boiling point and does not easily dissolve in water, it's bonding is most likely

Which substance will dissolve in water to conduct electricity?

At STP, fluorine is a gas and bromine is a liquid because

A metal conducts electricity easily because

How many electrons are shared between the two atoms of a nitrogen molecule?