Roughly how many oxygen atoms, lined up in a row, would fit within a one-nanomet

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1. Roughly how many oxygen atoms, lined up in a row, would fit within a one-nanometre space?

None; a single oxygen atom is already bigger than 1 nanometre

Just one

About seven

About seventy

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An oxygen atom’s diameter is roughly 0.14 nanometres, so about seven atoms lined up in a row would span approximately one nanometre.