A ________ covalent bond between the same two atoms is the longest.
A) single
B) double
C) triple
D) strong
E) They are all the same length.
Question 2
Sulfur dioxide is not released into the atmosphere in any significant amount by ________.
A) burning of coal
B) bacterial action
C) internal combustion engines
D) volcanic eruption
E) Sulfur dioxide is produced in significant amount by all of these processes.