The doppler effect indicates that the universe is expanded because
a. light from other galaxies is different colors
b. light from other galaxies are blue shift
c. light from other galaxies are red shift
d. light from other galaxies is the same color

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.

plasma is the state of matter where the substance is ionized and has no definite shape or volume. the fact of being ionized makes the substance a good electrical conductor.