In which orbitals would the valence electrons for selenium (Se) be placed? s orbital and f orbital
s orbital only
s orbital and p orbital
d orbital only

Which of the following compounds does not contain molecules? question 2 options: co2 h2 nacl h2o

If you burn 10 kilograms of wood in a fire (combustion) what is the weight of the products after the fire has finished burning the wood?

Which of the following describes a compound? (hint: carbon and oxygen bo a. a piece of pure carbon, containing only carbon atoms b. oxygen gas surrounding a solid piece of carbon c. a substance made of two oxygen atoms for each carbon atom carbon and oxygen atoms mixed without being bonded together