Sort these elements into pairs that would most likely exhibit similar chemical properties br ,mg ,f ,sr ,s ,o

H2so4(aq) + mg(s)—> mgso4(aq) +h2(g) which substance is the acid in the reaction?

How many electrons does silver have to give up in order to achieve a sido noble gas electron configuration?

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils