Imagine that Mendeleev's model never existed. What challenges would come about as a result?

Which orbitals form a pi bond? a.the s orbital and three p orbitals b.the s orbital and two p orbitals c.overlapping p orbitals d.overlapping hybrid orbitals

Balance this equation co2(g) + h2o (g) show that the balanced equation obeys the law if conversation of mass

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al