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5 What were the first atoms of the elements of existence at the start of the universe and the ones that make up 97 percent of all matter in the universe? OA. water and oxygen OB. hydrogen and hellum Oc
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40 votes
40 votes
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What were the first atoms of the elements of existence at the start of the universe and the ones that make up 97 percent of all matter in the
universe?
OA. water and oxygen
OB. hydrogen and hellum
Oc carbon and nitrogen
OD. calcium and iron
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User Sunyoung
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1 Answer

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11 votes
Option B is the answer.
It took 380,000 years for electrons to be trapped in orbits around nuclei, forming the first atoms. These were mainly helium and hydrogen, which are still by far the most abundant elements in the universe.
User Ken Kinder
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