2 Phosphorus trioxide (P302) and
phosphorus pontoxide (P20s) are
examples where phosphorus atoms
may bond in different ratios with
oxygen and thus have different
valencies. Give the valency of
phosphorus in P20, and P2Os. As
usual, take the valency of oxygen
as -2​

Which statement is true about this reaction? 14n+1h 15o it is a practical source of energy on earth. it occurs only outside the solar system. its product is heavier than each of its reactants. it shows the critical mass of an element.

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state. a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car