Is 2B+3Cl2->BCl3 a redox reaction?

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.

catya that's not even a b or c

air

in a tire you fill a tire with air

then a couple days later you check the air pressure in the tire

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