Chemistry: History of the Periodic Table
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Questions and Answers

Which group of elements is always found combined with nonmetals in nature?

  • Transition Metals
  • Halogens
  • Alkaline Earth Metals (correct)
  • Alkali Metals

    • What is the principal electron shell designated by the Principal Quantum Number (n)?

  • halogens
  • alkali metals
  • noble gases
  • ground state (correct)

    • Which element makes up over ¾ of the atmosphere?

  • oxygen
  • hydrogen
  • carbon
  • nitrogen (correct)

    • Who proposed that an electron can also be thought of as a wave?

    <p>Louis de Broglie</p> Signup and view all the answers

    What type of gases are the elements in Group 18 (Noble Gases)?

    <p>unreactive gases</p> Signup and view all the answers

    Which scientist is recognized as the 'father' of the Periodic Table?

    <p>Dmitiri Ivonovich Mendeleev</p> Signup and view all the answers

    According to the text, which group of elements does Dmitiri Ivonovich Mendeleev belong to?

    <p>Representative/Main Group elements</p> Signup and view all the answers

    True or False: Non-metals are considered as one of the good conductors of heat and electricity.

    <p>False</p> Signup and view all the answers

    Which group of elements includes the Transition Elements according to the text?

    <p>Groups 3 to 12</p> Signup and view all the answers

    True or False: Metalloids have properties of both metals and non-metals.

    <p>True</p> Signup and view all the answers

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