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Why does primordial nucleosynthesis end about 3 minutes after the Big Bang? Select one: a. The number densities of photons is too large at this time and the photons induce fission, stopping nuclei formation b. The universe is too hot at t-3 minutes C. The number densities of neutrons and protons and other nuclei are too small at this time and fusion fades out. O d. Deuterium has a lifetime of 3 minutes, so after this time no more deuterium survives as it decays away.

Why does primordial nucleosynthesis end about 3 minutes after the Big Bang? Select one: a. The number densities of photons is too large at this time and the photons induce fission, stopping nuclei formation b. The universe is too hot at t-3 minutes C. The number densities of neutrons and protons and other nuclei are too small at this time and fusion fades out. O d. Deuterium has a lifetime of 3 minutes, so after this time no more deuterium survives as it decays away.

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Why does primordial nuclesythesis end about 3 minutes after the Big Bang ? 

select one : 

a. The number densities of photons is too large at this time and the photons induce fission , stopping nuclei formation 

b. The universe is tooo hot at t=3 minutes 

c. The number densities of neutrons and protons and other nuclei are too small at this time and fusion fades out . 

d. Deuterium has a lifetime of 3 minutes , so after this time no more deuterium survives as it decays away ?

Why does primordial nucleosynthesis end about 3 minutes after the Big Bang? Select one: a. The number densities of photons is too large at this time and the photons induce fission, stopping nuclei formation O b. The universe is too hot at t=3 minutes O c. The number densities of neutrons and protons and other nuclei are too small at this time and fusion fades out. d. Deuterium has a lifetime of 3 minutes, so after this time no more deuterium survives as it decays away.
Transcribed Image Text:Why does primordial nucleosynthesis end about 3 minutes after the Big Bang? Select one: a. The number densities of photons is too large at this time and the photons induce fission, stopping nuclei formation O b. The universe is too hot at t=3 minutes O c. The number densities of neutrons and protons and other nuclei are too small at this time and fusion fades out. d. Deuterium has a lifetime of 3 minutes, so after this time no more deuterium survives as it decays away.
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