Question: how many electrons are present in the outermost orbital of oxygen atom?
Answer: Valence electron is the number of electrons present in the outermost orbit of an element . Oxygen has the atomic number 8. As the electronic configuration of oxygen 1s2 , 2s2, 2p4, it has 6 electrons in outermost orbit ( which is 2nd orbit) and no of electrons in this orbit is 6 ( 2+4).