Both protons and neutrons (and their anti-particles)froze out:
A)after $10^{ - 43}$ seconds, at the Planck Era.
B)at $1032 \mathrm {~K}$ at the end of the Inflationary Era.
C)at $1013 \mathrm {~K} \text {, }$ , bout .0001 seconds after the Big Bang.
D)after about a minute of expansion.
E)about 50,000 years after the Big Bang.

Question

Quizplus · Accepted Answer

Protons and neutrons froze out at approximately $10^{13} \mathrm{~K}$, about 0.0001 seconds after the Big Bang, during the Quark Epoch.

Both Protons and Neutrons (And Their Anti-Particles)froze Out: A)after 10−4310^{ - 43}10−43

Both Protons and Neutrons (And Their Anti-Particles)froze Out:
A)after $10^{ - 43}$