I need help with this code can anyone of y’all help me with this

What is the polyatamic ion of thiosulfate

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

Identify the electromagnets with poles that are reversed from the electromagnet shown above