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Electrons began orbiting atomic nuclei during which era?

a. Particle
b. Electroweak
c. Planck
d. Atoms


Sagot :

Answer: d. Atoms

Explanation:

This era marks the formation of stable atoms, where electrons started to orbit atomic nuclei, leading to the formation of neutral atoms.

This occurred after the initial stages of cosmic evolution when the universe cooled down sufficiently for protons and electrons to combine and form neutral hydrogen atoms, which later led to the formation of other elements through nuclear fusion processes in stars.