1.5 Atomic Structure and Electron Configuration

    Cards (108)

    • Where are protons located within an atom?
      In the nucleus
    • What is the key feature of the Bohr model?
      Quantized energy levels
    • Atomic spectra are produced when electrons transition between energy levels.
    • Atomic structure refers to the internal composition and organization of an atom
    • What are the three fundamental subatomic particles?
      Protons, neutrons, electrons
    • What is the central concept of the Bohr model?
      Discrete energy levels
    • The Bohr model accurately describes the behavior of all atoms.
      False
    • The principal quantum number determines the energy level
    • The Pauli Exclusion Principle states that no two electrons in the same atom can have the same set of quantum numbers
    • The Pauli Exclusion Principle states that no two electrons in the same atom can have the same set of quantum numbers
    • What are the quantum numbers for Electron 1 in helium?
      n=1, l=0, ml=0, ms=+1/2
    • Where are protons located in an atom?
      In the nucleus
    • What does the Bohr model describe about electron orbits in an atom?
      Electrons orbit in discrete energy levels
    • Hund's Rule states that electrons will first singly occupy degenerate orbitals with parallel spins before pairing up.

      True
    • The Aufbau principle states that electrons fill orbitals from lowest to highest energy.

      True
    • When filling degenerate orbitals, Hund's Rule states that electrons occupy each orbital singly before pairing
    • What is the condensed electron configuration of Neon (Ne)?
      [Ne]
    • What is the electron configuration of Hydrogen (H)?
      1s¹
    • The condensed electron configuration of Iron (Fe) is [Ar] 4s² 3d⁶.

      True
    • The Pauli Exclusion Principle states that no two electrons can have the same set of quantum numbers.
    • The actual electron configuration of Chromium (Cr) is [Ar] 4s¹ 3d⁵ because a half-filled 3d subshell is more stable.

      True
    • The sum of protons and neutrons in an atom's nucleus is called its mass number.
    • What is the charge of a proton?
      Positive (+1)
    • What type of charge do neutrons carry?
      Neutral (0)
    • Which subatomic particle has a positive charge?
      Proton
    • The atomic number of an element is determined by the number of protons in its nucleus.
      True
    • Neutrons have a neutral charge and are located in the nucleus.

      True
    • Order the steps involved in energy transitions in the Bohr model:
      1️⃣ Electron absorbs energy
      2️⃣ Electron jumps to a higher energy level
      3️⃣ Electron emits energy
      4️⃣ Electron returns to a lower energy level
    • What are the three fundamental particles that make up an atom?
      Protons, neutrons, electrons
    • Protons are negatively charged particles.
      False
    • Protons and neutrons reside within the nucleus
    • When an electron moves to a higher energy level, it absorbs energy
    • What are quantum numbers used to describe?
      Electron state in an atom
    • What does the magnetic quantum number specify?
      Orbital orientation
    • What must two electrons in the same orbital have in common?
      Opposite spins
    • Match the quantum number with its description:
      Principal Quantum Number (n) ↔️ Energy level (shell)
      Angular Momentum Quantum Number (l) ↔️ Orbital shape
      Magnetic Quantum Number (ml) ↔️ Spatial orientation
      Spin Quantum Number (ms) ↔️ Electron spin
    • The two electrons in helium comply with the Pauli Exclusion Principle because they have different spins.

      True
    • Match the subatomic particle with its properties:
      Proton ↔️ +1 charge, in nucleus
      Neutron ↔️ 0 charge, in nucleus
      Electron ↔️ -1 charge, orbits nucleus
    • Electrons emit energy when they move to a lower energy level.

      True
    • Steps for writing electron configurations according to the Aufbau Principle:
      1️⃣ Fill orbitals from lowest to highest energy
      2️⃣ Follow the Pauli Exclusion Principle
      3️⃣ Apply Hund's Rule