Group 15 Elements — Prelims Questions

Which of the following statements about Group 15 elements is incorrect?

Which of the following statements is correct regarding the allotropes of phosphorus?

Which of the following hydrides of Group 15 elements is the strongest reducing agent?

Which of the following oxides of Group 15 elements is amphoteric?

Which of the following is a characteristic feature of nitrogen's bonding, but not typically observed for heavier Group 15 elements?

The number of P-H bonds in hypophosphorous acid ($H_3PO_2$) is: