GK
BIG BANG THEORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Ionization
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Recombination
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Synthesis
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Nuclear fusion
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Detailed explanation-1: -About 380, 000 years after the Big Bang, matter cooled enough for electrons to combine with nuclei to form neutral atoms. This phase is known as “recombination, ‘’ and the absorption of free electrons caused the universe to become transparent.
Detailed explanation-2: -Elements and the ‘Big Bang’ theory During the formation of the universe some 14 billion years ago in the so-called ‘Big Bang’, only the lightest elements were formed – hydrogen and helium along with trace amounts of lithium and beryllium.
Detailed explanation-3: -Hydrogen recombination occurs when an electron is captured by a proton. It favors changes of greater energy-the greater the energy released, the higher the rate of recom-bination to that energy level. Relative recombination rates are discussed in more detail later.