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Electron Configuration NTG
Electron Configuration
 The ____________________________ of electrons in atoms.
 Element has a different # of electrons, so the electron configuration is
_______________________ for each element.
 Electrons tend to make arrangements to obtain the ___________________
possible energy (Ground State).
Principal Quantum Number
 The main energy level of an atom.
 Equal to the period #.
1s _____
2s _____ 2p _____ _____ _____
3s _____ 3p _____ _____ _____ 3d ___ ___ ____ ____ ____
 The principle quantum numbers are _____, ______, and ______.
Sublevels
Sublevel
# Orbitals
# Electrons
SC3b. Use the orbital configuration of neutral atoms to EXPLAIN its
effect on atom’s chemical properties.
Electron Configuration NTG
Electron Configuration Notation
 The __________________quantum number is equal to the element’s period ________.
 The sublevel is ____, ____, ____, or _____.
 The electrons are written as _________________________ above the sublevel letter.
Question:
Each atomic orbital is described by its principle quantum number and the
letter of the ________________________________________.
Electron Configuration Notation Practice
Element
# of e-‘s
Electron Configuration Notation
Hydrogen
Helium
Lithium
Beryllium
Boron
Carbon
Nitrongen
Oxygen
Fluorine
Neon
SC3b. Use the orbital configuration of neutral atoms to EXPLAIN its
effect on atom’s chemical properties.