Memory Anchor:

• Super Challenge:

  Stretch:

  Challenge:

Key Questions:

1. What is the maximum number of electrons that can be held by each of the three inner most shells?
   • The maximum number of electrons are 2 in the inner most shell, 8 in the second shell and 8 in the third shell.
2. What would a diagram of the electron structure of an atom of carbon look like?
   • A diagram of the electronic structure of carbon would have 2 electrons on inner most shell, 4 on the second shell.
3. Why is carbon found in group 4 of the periodic table?
   • Carbon is found in group 4 because there are 4 electrons in its outermost shell.
4. How big is the total radius of an average atom?
   • The total radius of an average atom is 0.1 nm (1 x 10-10 m).