Reactivity of Rubidium and Potassium Quiz
18 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Why is rubidium more reactive than potassium?

  • Rubidium has more protons than potassium.
  • Rubidium has a higher atomic number than potassium.
  • Rubidium has a greater tendency to lose electrons than potassium. (correct)
  • Rubidium forms stronger ionic bonds than potassium.

    • What is a common observation that shows rubidium is more reactive than potassium?

  • Rubidium tarnishes more quickly in air compared to potassium.
  • Rubidium forms fewer compounds than potassium in general.
  • Rubidium reacts vigorously with water, producing more heat and hydrogen gas than potassium. (correct)
  • Rubidium has a lower reactivity towards halogens than potassium.

    • Which statement is correct about the noble gases?

  • The noble gases have molecules with two atoms.
  • The noble gases have boiling points that increase going down the group. (correct)
  • The noble gases react with metals to form ionic compounds.
  • The noble gases all have atoms with eight electrons in the outer shell.

    • Which isotopic mass number of neon has the highest percentage abundance?

    <p>20</p> Signup and view all the answers

    In electrolysis of molten sodium chloride to produce sodium, what is the correct half equation for the production of sodium?

    <p>Na+ + e- → Na</p> Signup and view all the answers

    What is a key difference between rubidium and potassium in their reactivity?

    <p>Potassium reacts faster with water but slower with oxygen compared to rubidium.</p> Signup and view all the answers

    What is the purpose of using a mesh to keep the products of electrolysis apart?

    <p>To prevent the products from reacting with each other</p> Signup and view all the answers

    In the electrolysis of molten sodium chloride, which type of particle passes through the mesh?

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

    Which two ions are present in aqueous sodium chloride solution, in addition to sodium and chloride ions?

    <p>Hydroxide ions and hydrogen ions</p> Signup and view all the answers

    What is the alkaline solution produced during the electrolysis of aqueous sodium chloride?

    <p>Sodium hydroxide</p> Signup and view all the answers

    In the reaction 2C(s) + SiO2(s) → Si(s) + 2CO(g), what does this reaction indicate about the position of silicon in the reactivity series?

    <p>Silicon is less reactive than carbon</p> Signup and view all the answers

    What happens when an atom loses an electron in an electrolytic cell?

    <p>It gains a positive charge</p> Signup and view all the answers

    Which section of the periodic table in Figure 1 is most likely to contain element Q?

    <p>Group 2</p> Signup and view all the answers

    Which section of the periodic table in Figure 1 is most likely to contain element R?

    <p>Group 3</p> Signup and view all the answers

    What are two differences between the physical properties of Group 1 elements and transition elements?

    <p>Group 1 elements are harder than transition elements, Transition elements have lower boiling points than Group 1 elements</p> Signup and view all the answers

    What type of bonding is typically found in compounds formed between metals and non-metals?

    <p>Ionic bonding</p> Signup and view all the answers

    Describe what happens when a magnesium atom reacts with an oxygen atom, with reference to electrons.

    <p>Magnesium loses electrons to oxygen forming magnesium oxide through ionic bonding</p> Signup and view all the answers

    What happens when sodium carbonate reacts with hydrochloric acid in an exothermic reaction?

    <p>The reaction releases heat to the surroundings</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser