Lesson 3 | Introduction to Polarity and Chemical Bonding

• Arranged by...

  1. by increasing atomic numbers
  2. vertically in groups/family
  3. horizontally in Period (7)
• ELEMENTS IN THE PERIODIC TABLE

  • define by a specific set of quantum numbers
  • have specific electronic configuration

  Are selected in **Lewis Dot Symbol**

  Define chemical properties
• Quantum Numbers

  • describe atomic orbitals as well as the properties of the e- in those orbitals
• Principal Quantum Numbers (n)

  • size of orbital and main energy level

  the bigger n greater the distance of electron (e) in the orbitals from nucleus, larger orbital.
• Azimuthal Quantum Numbers

  • number for an atomic orbital that determines its orbital angular momentum and describes the shape of the orbital.
• Magnetic Quantum Numbers

  • oriental of orbital around nucleus
• Spin Quantum Numbers

  • spins of electron either upward or downward
• Electron Configuration

  • describe where electrons are located around the nucleus of an atom.
  • the goal is to describe the arrangement of electrons around the nucleus in the pattern that we found them in nature.
  • we can use this information to predict how atoms will form chemical bonds and how they behave so its very useful for us to understand chemical bonding.
• Valence Electron

  -Electron (e) found in the outermost shell of an orbit or those that occupy the shell with the highest value of n and those that participate in chemical bonding.
• Lewis Dot Symbol

  • Representation of the valence electron of an atom that uses dots around the symbol of the element. The number of dots equals the number of valence electrons in the atom.