Which element has the electron configuration [xe] 6s2 4f14 5d10 6p2?

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

What material does not melt at any temperature

What will most likely happen when two bromine atoms bond together?