[问答题]
Phosphorus is an element in group 15 of the periodic table.
1.State the total number of occupied p orbitals at all levels in an atom of phosphorus.
2.Phosphorus,$P_4$,reacts with oxygen to form phosphorus oxide,$P_4O10$,by the following equation,$P_4$+5$O_2$→$P_4O_10$
1.Calculate the minimum volume of oxygen gas required to fully react with 16.7g phosphorus at 273Kand 100kPa.
2.20.4g of phosphorus oxide was formed during this reaction. Calculate the percentage yield.
3.Describe the acid-base nature of phosphorus oxide and use an equation to demonstrate this behaviour.
