Question

What is the most common element in water?

Answer 1

this is ur answer...

firstly hydrogen secondly oxygen ......

Answer 2

Since the oceans are mostly water, the elements hydrogen and oxygen are the most common. Sodium and chlorine are found in the salt in ocean water. Earth's atmosphere is made up of a combination of gases, including nitrogen, oxygen, and carbon dioxide. Nitrogen and oxygen are the most common elements in the atmosphere.