Multiple choice

Which one of the following statements is not true -

  1. most of the space in an atom is empty

  2. the total number of neutrons and protons is always

  3. the total number of electrons and protons in an atom is always equal

  4. the total number of electrons in any energy level can be calculated by the formula 2n2
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

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