Gr 10 Physical Sciences Ch 2: Electronic configuration
77 Questions
1 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

What is the main difference between electrons in an atom?

  • Electrons have different shapes
  • Electrons have different masses
  • Electrons have different charges
  • Electrons have different amounts of energy (correct)

    • Where are electrons with the lowest energy found in an atom?

  • Farthest from the nucleus
  • Closest to the nucleus (correct)
  • In the middle energy level
  • In the outermost energy level

    • What determines an element's reactivity and properties?

  • The distribution of electrons among various energy levels (correct)
  • The number of protons in an atom
  • The atomic mass of an element
  • The number of neutrons in an atom

    • How are energy levels or shells around the nucleus numbered?

    <p>Sequentially (1, 2, 3, and so on) (A)</p> Signup and view all the answers

    What is the atomic number of Lithium (Li) and how many electrons does it have?

    <p>Atomic number 3, with 3 electrons (C)</p> Signup and view all the answers

    What is an orbital in an atom?

    <p>A region around an atom where an electron is likely to be found (B)</p> Signup and view all the answers

    How do the electrons in the first energy level of Lithium (Li) and Fluorine (F) differ?

    <p>Both have 2 electrons in the first energy level (D)</p> Signup and view all the answers

    What is the atomic number of Neon (Ne) and how many electrons does it have?

    <p>Atomic number 10, with 10 electrons (B)</p> Signup and view all the answers

    What is the maximum number of electrons that can occupy an orbital?

    <p>2 (B)</p> Signup and view all the answers

    Which energy level contains only one s orbital?

    <p>First energy level (C)</p> Signup and view all the answers

    What is the purpose of Aufbau diagrams?

    <p>To represent an element's electron configuration (A)</p> Signup and view all the answers

    What is Hund's rule related to?

    <p>Electron pairing (B)</p> Signup and view all the answers

    What is the term for electrons in the outermost energy level of an atom?

    <p>Valence electrons (D)</p> Signup and view all the answers

    What is the significance of a full valence shell in an atom?

    <p>It makes the atom stable and unreactive (A)</p> Signup and view all the answers

    What is the purpose of spectroscopic notation?

    <p>To provide a concise way to represent electron configurations (B)</p> Signup and view all the answers

    What is the principle that states atoms tend to form bonds until they have eight electrons in their outermost shell?

    <p>The octet rule (A)</p> Signup and view all the answers

    What is the shape of p orbitals?

    <p>Dumbbell-shaped (D)</p> Signup and view all the answers

    What is the importance of understanding electron configuration?

    <p>It helps in predicting an element's chemical behavior (D)</p> Signup and view all the answers

    What is the primary factor that determines the distribution of electrons among various energy levels in an atom?

    <p>The attractive force of the positively charged nucleus (B)</p> Signup and view all the answers

    What is the arrangement of electrons in a neutral atom of Lithium (Li)?

    <p>Two electrons in the first energy level and one electron in the second energy level (D)</p> Signup and view all the answers

    Which of the following statements is true about electrons in the same energy level?

    <p>They have the same energy and mass (C)</p> Signup and view all the answers

    What is the significance of the first energy level in an atom?

    <p>It is the energy level closest to the nucleus (B)</p> Signup and view all the answers

    How do electrons in the second energy level of Fluorine (F) and Neon (Ne) differ?

    <p>The number of electrons in the second energy level is the same for both elements (D)</p> Signup and view all the answers

    What is the primary reason for the complexity of electron arrangement in an atom?

    <p>The presence of multiple orbitals within each energy level (D)</p> Signup and view all the answers

    What is the relationship between the energy of an electron and its distance from the nucleus?

    <p>Electrons with higher energy are farther from the nucleus (A)</p> Signup and view all the answers

    What is the significance of energy levels in understanding an element's reactivity and properties?

    <p>They determine the arrangement of electrons among various energy levels (B)</p> Signup and view all the answers

    What is the correct sequence of filling orbitals in an atom?

    <p>1s, 2s, 2p, 3s, 3p, 3d (A)</p> Signup and view all the answers

    What is the purpose of Pauli's Exclusion Principle?

    <p>To assert that electrons in the same orbital must have opposite spins (B)</p> Signup and view all the answers

    What is the electron configuration of a sodium ion (Na⁺)?

    <p>1s² 2s² 2p⁶ (B)</p> Signup and view all the answers

    What is the significance of a full valence shell in an atom?

    <p>It decreases the reactivity of an atom (D)</p> Signup and view all the answers

    What is the shape of s orbitals?

    <p>Spherical (D)</p> Signup and view all the answers

    Which of the following statements about electron configuration is true?

    <p>Electrons occupy the lowest energy orbitals first (C)</p> Signup and view all the answers

    What determines the number of electrons in an orbital?

    <p>The energy level of the orbital (B)</p> Signup and view all the answers

    What is the purpose of spectroscopic notation?

    <p>To provide a concise way to represent electron configurations (D)</p> Signup and view all the answers

    What is the correct electron configuration of argon (18 electrons)?

    <p>1s² 2s² 2p⁶ 3s² 3p⁶ (A)</p> Signup and view all the answers

    What is the significance of core electrons in an atom?

    <p>They are not important in determining an element's chemical properties (D)</p> Signup and view all the answers

    What is the key concept in Aufbau diagrams?

    <p>Electrons occupy the lowest energy orbitals first (C)</p> Signup and view all the answers

    Which of the following statements is true about valence electrons?

    <p>They are crucial in determining an element's chemical properties (B)</p> Signup and view all the answers

    What is the purpose of spectroscopic notation?

    <p>To provide a concise way to represent electron configurations (C)</p> Signup and view all the answers

    Why do atoms tend to form bonds until they have eight electrons in their outermost shell?

    <p>To achieve a full valence shell (D)</p> Signup and view all the answers

    What is the significance of Hund's rule?

    <p>Electrons prefer to occupy orbitals singly (A)</p> Signup and view all the answers

    What determines the electron configuration of an atom?

    <p>The number of electrons in the energy levels (D)</p> Signup and view all the answers

    Why are electrons in the same orbital called an electron pair?

    <p>Because they are in the same orbital (D)</p> Signup and view all the answers

    What is the purpose of understanding electron configuration?

    <p>To predict and explain an element's chemical behavior (C)</p> Signup and view all the answers

    What is the difference between s and p orbitals?

    <p>s orbitals are spherical, and p orbitals are dumbbell-shaped (D)</p> Signup and view all the answers

    What is the importance of Pauli's Exclusion Principle?

    <p>It asserts that two electrons in the same orbital must have opposite spins (D)</p> Signup and view all the answers

    What is the primary factor that determines the energy of an electron in an atom?

    <p>The distance from the nucleus (A)</p> Signup and view all the answers

    In which energy level do electrons with the highest energy reside?

    <p>The outermost energy level (A)</p> Signup and view all the answers

    What is the purpose of understanding the distribution of electrons among various energy levels in an atom?

    <p>To understand the reactivity and properties of an element (A)</p> Signup and view all the answers

    In a neutral atom of Lithium (Li), how many electrons occupy the first energy level?

    <p>2 electrons (D)</p> Signup and view all the answers

    What is the difference between the first energy level and the second energy level in an atom?

    <p>The energy of the electrons they contain (D)</p> Signup and view all the answers

    Why do electrons in higher energy levels have higher energy?

    <p>Because they are able to overcome the nucleus's attractive force (A)</p> Signup and view all the answers

    What is the significance of the first energy level in an atom?

    <p>It contains the lowest energy electrons (A)</p> Signup and view all the answers

    What is the relationship between the energy of an electron and its distance from the nucleus in an atom?

    <p>As the energy of an electron increases, its distance from the nucleus increases (B)</p> Signup and view all the answers

    What is the primary reason for the difference in energy between electrons in the same atom?

    <p>Their different distances from the nucleus (B)</p> Signup and view all the answers

    Which of the following statements is true about electrons in the same energy level?

    <p>They occupy different orbitals but have the same energy (B)</p> Signup and view all the answers

    What is the significance of the energy levels in understanding an element's reactivity?

    <p>They determine the element's reactivity and properties (C)</p> Signup and view all the answers

    How do the electrons in the first and second energy levels of an atom differ?

    <p>They have different energies and occupy different orbitals (C)</p> Signup and view all the answers

    What is the correct arrangement of electrons in a neutral atom of Fluorine (F)?

    <p>The first two electrons occupy the first energy level, and the remaining seven electrons fill the second energy level (C)</p> Signup and view all the answers

    What is the significance of the electron arrangement in an atom?

    <p>It determines the element's reactivity and properties (B)</p> Signup and view all the answers

    What is the primary factor that determines the distribution of electrons among various energy levels in an atom?

    <p>The energy of the electrons (B)</p> Signup and view all the answers

    Which of the following statements is true about the electron arrangement in an atom?

    <p>Electrons occupy different orbitals in the same energy level (B)</p> Signup and view all the answers

    Which of the following is NOT a guideline for determining electron configuration?

    <p>Each orbital can hold a maximum of three electrons (C)</p> Signup and view all the answers

    What is the primary reason why atoms tend to form bonds until they have eight electrons in their outermost shell?

    <p>To achieve a full valence shell and become less reactive (B)</p> Signup and view all the answers

    Which of the following statements about Aufbau diagrams is TRUE?

    <p>Aufbau diagrams show the sequence of filling orbitals in an atom (D)</p> Signup and view all the answers

    What is the term for the electrons that are NOT involved in chemical bonding?

    <p>Core electrons (D)</p> Signup and view all the answers

    Which of the following orbitals has a dumbbell shape?

    <p>p orbital (C)</p> Signup and view all the answers

    What is the maximum number of electrons that can occupy the third energy level?

    <p>18 (C)</p> Signup and view all the answers

    Which of the following is a consequence of Pauli's Exclusion Principle?

    <p>Electrons in the same orbital have opposite spins (C)</p> Signup and view all the answers

    What is the primary purpose of spectroscopic notation?

    <p>To provide a concise way to represent electron configurations (A)</p> Signup and view all the answers

    Which of the following energy levels contains one s orbital and five d orbitals?

    <p>Third energy level (A)</p> Signup and view all the answers

    What is the primary factor that determines the complexity of electron arrangement in an atom?

    <p>The energy levels in an atom (B)</p> Signup and view all the answers

    What is the correct sequence of filling orbitals in an atom?

    <p>1s, 2s, 2p, 3s, 3p, 3d (B)</p> Signup and view all the answers

    Which of the following statements about electrons in the same energy level is true?

    <p>Electrons occupy the lowest energy orbitals first (C)</p> Signup and view all the answers

    What determines the electron configuration of an atom?

    <p>The number of electrons in the atom (C)</p> Signup and view all the answers

    What is the significance of the octet rule in chemical reactions?

    <p>It states that atoms tend to form bonds until they have eight electrons in their outermost shell (C)</p> Signup and view all the answers

    Which of the following statements about Aufbau diagrams is true?

    <p>They are used to determine the electron configuration of an atom (A)</p> Signup and view all the answers

    More Like This

    Electron Shell Capacities
    37 questions

    Electron Shell Capacities

    MindBlowingPointillism avatar
    MindBlowingPointillism
    Atomic Structure: Key Concepts and Periodic Table Trends
    10 questions

    Atomic Structure: Key Concepts and Periodic Table Trends

    DazzlingTimpani avatar
    DazzlingTimpani
    Chemistry Lesson 1: Electrons and Energy Levels
    38 questions

    Chemistry Lesson 1: Electrons and Energy Levels

    AvidFoxglove avatar
    AvidFoxglove
    Chemistry Quiz: Electron Energy Levels
    45 questions

    Chemistry Quiz: Electron Energy Levels

    DeservingJudgment8992 avatar
    DeservingJudgment8992
    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser