Atomic Structure and Valency Quiz
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Atomic Structure and Valency Quiz

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Questions and Answers

What is the relationship between the number of valence electrons and valency?

  • Valency is the number of valence electrons
  • Valency is unrelated to the number of valence electrons
  • They are equal
  • Valency is determined by the number of valence electrons involved in bonding (correct)

    • What is meant by atomic mass number?

  • It is the total mass of an atom
  • It is the average mass of all isotopes of an element
  • It is the sum of protons, neutrons, and electrons in an atom
  • It is the sum of protons and neutrons in an atom (correct)

    • What is meant by a subatomic particle?

  • A particle that makes up an atom (correct)
  • A particle found within the nucleus of an atom
  • A particle with no electrical charge
  • A particle smaller than an atom

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