Unformatted text preview: this series continues on to g,h,i, etc.
Atoms that have been discovered or made up to this
point in time only have electrons in s, p, d, or f orbitals in
their ground state configurations. Quantum Numbers ms
• The last quantum number is
the spin quantum number, ms.
• The spin quantum number
only has two possible values.
ms = +1/2 or -1/2 • This quantum number tells us
the spin and orientation of the
magnetic field of the electrons.
• Wolfgang Pauli in 1925
discovered the Exclusion
– No two electrons in an atom can
have the same set of 4 quantum
numbers. 7 1/21/2014 • Remember:
– SHELL – corresponds to n level
– SUBSHELL – corresponds to the l level
– ORBITAL – corresponds to the specific ml
‘K’ SHELL l Magnetic
quantum 0 ml
0 Azimuthal quantum ‘s’ SUBSHELL 1s ORBITAL How many e- can be assigned in an orbital?
Ans: 2 electrons only, one is spin up (ms = +1/2), the
other is spin down (ms = -1/2) Atomic Orbitals
• Atomic orbitals are regions of space where the
probability of finding an electron about an
atom is highest.
• s orbital prop...
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