15.65 grams of beryllium metal are reacted with 22.5 grams of oxygen gas. how many grams beryllium oxide are produced and how much excess reagent remains? how many grams of beryllium oxide are produced and how much excess reagent remains?

The problem here is that according to aufbau principle before 3d orbital 4s subshell comes.after filling 3p orbital with electrons you have 4 electrons left, you place two in 4s with opposite spin and the other two in 3d in any of its two orbitals of total five orbitals with the same spin.

C. definite shape, definite volume. that is a solid.

Answerthe same as;