Worksheet: Alkali Metals

In this worksheet, we will practice describing the compounds and reactivities of alkali metals and trends in their physical and chemical properties.

Q1:

Which of the following is an alkali metal?

  • ARadium
  • BCesium
  • CCalcium
  • DLanthanum
  • ECerium

Q2:

Which of the following alkali metals is the most reactive?

  • ACesium
  • BPotassium
  • CLithium
  • DRubidium
  • ESodium

Q3:

In which of the alkali metals is the valence electron closest to the nucleus?

  • ASodium
  • BCesium
  • CLithium
  • DPotassium
  • ERubidium

Q4:

The most stable isotope of the radioactive alkali metal francium has a half-life of only 22 minutes. If a sample of francium were large enough to react visibly with water, would the reaction be more or less vigorous than the reaction between cesium and water?

  • ALess vigorous
  • BMore vigorous
  • CSimilarly vigorous

Q5:

Which of the following statements is false?

  • AAlkali metals have lower boiling points than iron.
  • BAlkali metals are softer than iron.
  • CAlkali metals are denser than iron.
  • DAlkali metals are more reactive than iron.
  • EAlkali metals have lower melting points than iron.

Q6:

Which of the following is not a property of alkali metals?

  • AThey react with oxygen to produce oxides, peroxides, and superoxides.
  • BThey are otherwise known as Group 1 metals.
  • CThey have low densities relative to most other metals.
  • DThey have two s electrons in their outer shell.
  • EThey react with water to produce hydroxides and hydrogen.

Q7:

Which of the following compounds is the most covalent?

  • A R b C l
  • B K C l
  • C N a C l
  • D C s C l
  • E L i C l

Q8:

The reaction of a group I metal hydroxide with excess nitric acid leads to a series of solid metal nitrates. Of the following, which would you expect to have the lowest boiling point?

  • A R b N O 3
  • B L i N O 3
  • C N a N O 3
  • D K N O 3
  • E C s N O 3

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