Periodic Table Basics
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Questions and Answers

What does the periodic table arrange into rows and columns?

  • Molecules
  • Atomic nuclei
  • Chemical elements (correct)
  • Chemical compounds

    • According to the periodic law, what is evident when elements are arranged in order of their atomic numbers?

  • Approximate recurrence of their properties (correct)
  • No pattern in their properties
  • Complete change in their properties
  • Exact repetition of their properties

    • Which chemist formulated the first generally accepted periodic table?

  • Niels Bohr
  • Albert Einstein
  • Dmitri Mendeleev (correct)
  • Marie Curie

    • What increases going down a group in the periodic table?

    <p>Metallic character</p> Signup and view all the answers

    What discovery helped to explain the periodic law early in the 20th century?

    <p>Atomic numbers and pioneering work in quantum mechanics</p> Signup and view all the answers

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