lecture 2

    Cards (28)

    • What is the principal quantum number represented by?

      n
    • How does the wavefunction of an electron behave in an atom?
      It obeys boundary conditions and has quantized energy
    • What equation is solved for an electron in a Coulomb potential?
      Schrödinger equation
    • What does the principal quantum number indicate?
      Energy levels of an electron
    • What is the ground state energy for n = 1?
      -hℜ
    • How does energy change as n increases?
      Energy increases until n =
    • What is an atomic orbital?
      Wavefunction of an electron in an atom
    • What does the square of the wavefunction represent?
      Probability density of an electron
    • What coordinates are used to describe atomic position?
      Spherical polar coordinates
    • What does the radial wavefunction depend on?
      Distance from the nucleus (r)
    • What are the three quantum numbers needed to describe atomic orbitals?
      n, l, ml
    • What does the orbital angular momentum quantum number (l) relate to?
      Shape of the orbital
    • How many values can l take for a given n?
      From 0 to n-1
    • What are subshells in atomic orbitals?
      Groups of orbitals with different l values
    • What are degenerate orbitals in hydrogen?
      All subshells of a given n value
    • What is the shape of an s-orbital?
      Spherically symmetrical
    • What does the density of shading in an s-orbital represent?
      Probability of finding the electron
    • What happens to the size of orbitals as n increases?
      Size of the orbital increases
    • What is a nodal plane in p-orbitals?
      Plane where probability density is zero
    • How many lobes does a p-orbital have?
      Two lobes of opposite sign
    • What is the shape of d-orbitals?
      More complicated with four lobes
    • What does the orbital angular momentum (L) depend on?

      Value of l
    • What are the two spin states of an electron?
      +½ and -½
    • What does the spin magnetic quantum number (ms) indicate?
      Direction of electron spin
    • What are the quantum numbers for the ground state of hydrogen?
      n = 1, l = 0, ml = 0
    • What happens when a hydrogen electron absorbs energy?
      It can promote to n = 2
    • How many orbitals can an electron occupy at n = 2 in hydrogen?
      Four orbitals (2s, 2px, 2py, 2pz)
    • What effect does adding more electrons have on atomic orbitals?
      It affects the energies of the orbitals
    See similar decks