Question

Ozone is formed when _______.
a.
two oxygen molecules combine
b.
an individual oxygen atom combines with an oxygen molecule
c.
ultraviolet radiation breaks apart four oxygen molecules
d.
oxygen molecules are broken into separate atoms


Please select the best answer from the choices provided

A
B
C
D

Answer 1

B

Ozone (O3) is formed when a single oxygen atom (O) combines with an oxygen molecule (O2): O + O2 → O3.