Multiple choice general knowledge math & puzzles

If two protons are removed from an oxygen nucleus, the result is:

  1. Carbon

  2. Neon

  3. Nitrogen

  4. Helium

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A Correct answer
Explanation

Oxygen has an atomic number of 8 (8 protons). If you remove two protons, the atomic number becomes 6. The element with atomic number 6 is Carbon. Neon has 10 protons, Nitrogen has 7, and Helium has 2.