GK
BIG BANG THEORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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25% hydrogen and 75% helium
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75% hydrogen and 75% helium
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75% hydrogen and 25% lithium
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75% hydrogen and 25% helium
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Detailed explanation-1: -The process of forming the hydrogen and helium and other trace constituents is often called “big bang nucleosynthesis". Schramm’s figures for relative abundances indicate that helium is about 25% by mass and hydrogen about 73% with all other elements constituting less than 2%.
Detailed explanation-2: -2) The observed composition of ordinary matter in the universe–roughly 75 percent hydrogen and 25 percent helium–closely matches theoretical predictions based on the Big Bang model.
Detailed explanation-3: -Approximately 73% of the mass of the visible universe is in the form of hydrogen. Helium makes up about 25% of the mass, and everything else represents only 2%.
Detailed explanation-4: -Hydrogen is an element, usually in the form of a gas, that consists of one proton and one electron. Hydrogen is the most abundant element in the universe, accounting for about 75 percent of its normal matter, and was created in the Big Bang.