A. Oxygen
B. Hydrogen
C. Carbon Dioxide
D. Silicon
Check Answer
The correct answer is B) Hydrogen.
The most abundant element in the universe is hydrogen. It makes up about 75% of the universe’s elemental mass.
Oxygen is the third most abundant element, making up about 1% of the universe’s elemental mass.
Carbon dioxide is not an element, but rather a compound made up of the elements carbon and oxygen.
Silicon is the second most abundant element in the universe, making up about 28% of the elemental mass.
The most abundant element in the universe is hydrogen. It makes up about 75% of the universe’s elemental mass.
Oxygen is the third most abundant element, making up about 1% of the universe’s elemental mass.
Carbon dioxide is not an element, but rather a compound made up of the elements carbon and oxygen.
Silicon is the second most abundant element in the universe, making up about 28% of the elemental mass.
