Which of the following is a mineral?
coal
ling
glass
brick
salt

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.

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