Question 1
Recent studies indicate that lightning may be responsible for as much as _____% of the total fixed nitrogen available on earth.
◦
5◦
25◦
50◦
75◦
95Question 2
The ability of the Group 5A elements to form __________ greatly decreases after nitrogen.
◦
molecules with five covalent bonds◦
pi bonds◦
larger molecules with single bonds◦
molecules with four covalent bonds◦
All of these are correct.