Cards (45)

  • What is the atomic number of an element defined as?
    Number of protons
  • What does the electron configuration of an atom describe?
    Electron distribution
  • The period number in the Periodic Table corresponds to the highest occupied electron shell
  • Atomic radius decreases from left to right across a period.

    True
  • What are periodic trends driven by in the Periodic Table?
    Increasing nuclear charge
  • What happens to ionization energy as you move down a group in the Periodic Table?
    Decreases
  • What does the mass number of an atom represent?
    Protons and neutrons
  • Steps to describe the arrangement of elements in the Periodic Table based on electron configurations:
    1️⃣ Assign electron shells
    2️⃣ Distribute electrons among shells
    3️⃣ Identify valence electrons
  • Electron shells are numbered 1, 2, 3, and so on, moving further from the nucleus.

    True
  • The period number in the Periodic Table corresponds to the highest occupied electron shell
  • What are groups in the Periodic Table?
    Vertical columns
  • Periods in the Periodic Table are arranged vertically.
    False
  • Periodic trends are influenced by the number of protons and the arrangement of electrons.

    True
  • Electronegativity increases down groups.
    False
  • The Periodic Table classifies elements into three main categories: metals, nonmetals, and metalloids.
  • The atomic number determines an element's position in the Periodic Table.

    True
  • What does the period number in the Periodic Table correspond to?
    Highest occupied shell
  • Elements in the same group share the same number of valence electrons
  • Periodic trends are driven by the increasing nuclear charge
  • Electronegativity increases from left to right across a period.
    True
  • The atomic number of an element is the number of protons in its nucleus.
    True
  • Why is the atomic number unique to each element?
    Number of protons
  • Valence electrons are located in the outermost shell
  • How many electrons can the third electron shell hold?
    18
  • Elements in the same group have the same number of valence electrons.

    True
  • Elements in the same group share the same number of valence electrons in their outermost shell.
  • Match the feature with the corresponding term:
    Horizontal rows ↔️ Periods
    Vertical columns ↔️ Groups
  • As you move down a group, the atomic radius of elements increases because additional electron shells are added.
  • The atomic radius decreases as you move across a period.

    True
  • Metalloids are located on the left side of the Periodic Table.
    False
  • The atomic number is unique to each element
  • Electron shells are numbered to represent different energy levels
  • What does the group number in the Periodic Table indicate about an element?
    Valence electrons
  • What happens to ionization energy as you move down a group?
    Decreases
  • Atomic radius decreases from left to right across a period
  • The increasing nuclear charge and decreasing shielding of valence electrons impact chemical reactivity
  • The symbol for the atomic number is Z
  • What do electron shells represent in an atom?
    Energy levels
  • How many electrons can the first electron shell hold?
    2
  • Match the period number with the shell occupied and the number of elements in that period:
    Period 1 ↔️ Shell 1, 2 elements
    Period 2 ↔️ Shell 2, 8 elements
    Period 3 ↔️ Shell 3, 8 elements