GENERAL KNOWLEDGE

Detailed explanation-1: -About 75% of the matter in the universe is hydrogen and the remaining quarter is helium. All the other elements are relatively rare to find.

Detailed explanation-2: -Hydrogen makes up about 70% of the universe by mass, which makes it by far the most abundant element. In stars like the sun, hydrogen atoms collide to create Helium atoms, which is a fusion reaction.

Detailed explanation-3: -The data indicates that hydrogen and helium make up nearly all of the nuclear matter in the universe. The most abundant element, hydrogen, accounts for 74% of the mass while helium contributes 25%. Heavier elements comprise less than 1% of the total.