although fusion is an energetically favorable reaction for light nuclei, it does not occur under standard conditions on earth because:

fission reactions are always favored over fusion reactions

a large amount of energy must be invested into the reaction before it can occur

atoms on earth are generally too large to participate in fusion reactions

fusion reactions usually do not produce sufficient energy to make them worthwhile

The best and most correct answer among the choices provided by your question is the first choice.

Although fusion is an energetically favorable reaction for light nuclei, it does not occur under standard conditions on Earth because: fission reactions are always favored over fusion reactions.

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Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.