Контрольные задания > Part A. Instructions for completing this part are on the cover sheet. Choose the correct answer and mark an 'x' in the corresponding box on your answer sheet. A1. Electronic configuration of the aluminum atom: 1)1s²2s²2p¹ 2) 1s²2s²2p⁶3s² 3) 1s²2s²2p⁶3s²3p¹ 4) 1s²2s² A2. In which row are the chemical elements arranged in order of increasing atomic radius? 1) Na, Mg, Al 2) Al, Mg, Na 3) K, Na, Li 4) Mg, Be, Ca A3. The most malleable metal is: 1) gold 2) copper 3) silver 4) aluminum A4. Does not react with sulfuric acid solution 1) zinc 2) silver 3) nickel 4) iron A5. Aluminum oxide reacts with each of the following substances: 1) HCl and O₂ 2) KOH and H₂O 3) HCl and KOH 4) NaNO₃ and H₂SO₄ A6. Used as a reducing agent in blast furnace smelting of pig iron: 1) hydrogen 2) aluminum 3) coke 4) magnesium
Вопрос:

Part A. Instructions for completing this part are on the cover sheet. Choose the correct answer and mark an 'x' in the corresponding box on your answer sheet. A1. Electronic configuration of the aluminum atom: 1)1s²2s²2p¹ 2) 1s²2s²2p⁶3s² 3) 1s²2s²2p⁶3s²3p¹ 4) 1s²2s² A2. In which row are the chemical elements arranged in order of increasing atomic radius? 1) Na, Mg, Al 2) Al, Mg, Na 3) K, Na, Li 4) Mg, Be, Ca A3. The most malleable metal is: 1) gold 2) copper 3) silver 4) aluminum A4. Does not react with sulfuric acid solution 1) zinc 2) silver 3) nickel 4) iron A5. Aluminum oxide reacts with each of the following substances: 1) HCl and O₂ 2) KOH and H₂O 3) HCl and KOH 4) NaNO₃ and H₂SO₄ A6. Used as a reducing agent in blast furnace smelting of pig iron: 1) hydrogen 2) aluminum 3) coke 4) magnesium

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Ответ:

Part A.

A1. Electronic configuration of the aluminum atom:

  • 1) 1s²2s²2p¹
  • 2) 1s²2s²2p⁶3s²
  • 3) 1s²2s²2p⁶3s²3p¹
  • 4) 1s²2s²

A2. In which row are the chemical elements arranged in order of increasing atomic radius?

  • 1) Na, Mg, Al
  • 2) Al, Mg, Na
  • 3) K, Na, Li
  • 4) Mg, Be, Ca

A3. The most malleable metal is:

  • 1) gold
  • 2) copper
  • 3) silver
  • 4) aluminum

A4. Does not react with sulfuric acid solution

  • 1) zinc
  • 2) silver
  • 3) nickel
  • 4) iron

A5. Aluminum oxide reacts with each of the following substances:

  • 1) HCl and O₂
  • 2) KOH and H₂O
  • 3) HCl and KOH
  • 4) NaNO₃ and H₂SO₄

A6. Used as a reducing agent in blast furnace smelting of pig iron:

  • 1) hydrogen
  • 2) aluminum
  • 3) coke
  • 4) magnesium
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