1. 1) BellRinger: Write the electron configuration for carbon. Then draw the orbital box diagram. Then write how many valence electrons it has and what group it is in. 2) Worksheet #21

2. BELLRINGER 1s 2 2s 2 2p 2 Valence (OUTER) electrons = 4 Group = 14

3. Worksheet #21 1)Mass 2) Number 3) location, speed 4) lanthanides, actinides 5) stairway

4. Name of Group Group Number (1 -18) Valence e - Block found (s,p,d,f) Metal, Nonmetal or Metalloids Alkali Metals 11SMetals Alkaline Earth Metals 22SMetals Noble Gases188 Ps2p6Ps2p6 Nonmetals Halogens177 Ps2p5Ps2p5 Nonmetals Carbon Family 144 Ps2p2Ps2p2 Nonmetals, Metalloids Oxygen Group 166 Ps2p4Ps2p4 Nonmetals, Metalloids Nitrogen Family 155Ps2p3Ps2p3 Nonmetals, Metalloids

5. 6) s 1 7) s 2 Electron Filling Order

6. Electron Configuration Ca Calcium 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 [Ar] 4s 2

7. Electron Configuration Cr Chromium 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 4 [Ar] 4s 2 3d 4

8. Atom is bigger Cs = 6 th period 6 energy levels Fr = 7 th period 7 energy levels Francium is bigger. More energy levels

9. Atom is bigger Carbon = 2 nd period 2 energy levels Nitrogen = 2 nd period 2 energy levels Carbon has 6 protons Nitrogen has 7 protons Carbon is bigger. Carbon has less protons.

10. CLOSING ACTIVITY Name two new things that you learned today