GK
BIG BANG THEORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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How long did it take from the onset of the Big Bang to the formation of an atom (Hydrogen)?
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Less than 1 second
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10 seconds
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3 minutes
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500 million years
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Explanation:
Detailed explanation-1: -Within about 3 minutes after the Big Bang, conditions cooled enough for these protons and neutrons to form hydrogen nuclei. This is called the era of nucleosynthesis.
Detailed explanation-2: -Nucleosynthesis is the creation of new atomic nuclei, the centers of atoms that are made up of protons and neutrons. Nucleosynthesis first occurred within a few minutes of the Big Bang.
Detailed explanation-3: -The universe cooled as it expanded, and over time the different ingredients of our universe froze out as temperatures plummeted. Quarks froze out first, then protons and neutrons, followed by electrons. Finally, after about 380, 000 years, hydrogen – the first atoms – started to form.
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