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MMLU-Pro / 4339 / Which is correct about the calcium atom?

Problem

Answer published by the source. Consult the official source to check your work against its answer.

question

Which is correct about the calcium atom?

category

chemistry

options

  1. It contains 20 protons and neutrons
  2. All atoms of calcium have 20 protons and 40 neutrons
  3. It contains 20 protons, neutrons, and electrons
  4. All calcium atoms have 20 protons, neutrons, and electrons
  5. All atoms of calcium have a mass of 40.078 u
  6. It contains 40 protons and 40 electrons
  7. All calcium atoms have a mass of 20.078 u
  8. It contains 20 protons and 20 electrons
  9. It contains 20 neutrons and 20 electrons
  10. It contains 40 protons and 20 electrons

src

ori_mmlu-high_school_chemistry

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Source and history

Official source

initial import