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Alkali Metals quiz

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이 집합의 용어 (9)

  • What group do alkali metals belong to on the periodic table?
    Alkali metals belong to group 1A on the periodic table.
  • Why is hydrogen not considered an alkali metal?
    Hydrogen is not considered an alkali metal because it is a non-metal.
  • What is the electron configuration characteristic of alkali metals?
    Alkali metals have an ns1 electron configuration, meaning they have one valence electron in their outer shell.
  • How do alkali metals typically react with water?
    Alkali metals react with water in a highly exothermic manner, often resulting in explosions.
  • What type of oxide does sodium form when it reacts with oxygen?
    Sodium forms a peroxide, Na2O2, when it reacts with oxygen.
  • What is the trend in atomic radii for alkali metals as you move down the group?
    The atomic radii of alkali metals increase as you move down the group.
  • What is the natural state of sodium in the environment?
    Sodium naturally exists as Na+ in the environment, not in its solid form.
  • What happens to hydrogen's oxidation number during the reaction with alkali metals?
    Hydrogen's oxidation number decreases from +1 to 0, indicating it is reduced.
  • What type of compounds do alkali metals form with halogens?
    Alkali metals form ionic halides with halogens.