Problem:
How is a stirring rod with a 90 degree angle bend prepared in the lab?
Procedure:
1. Using a file make a scratch on a piece of glass tubing that is 20 cm long.
2. Using paper towels carefully snap the glass tubing at the scratch mark.
3.Fire polish the ends of the glass tubing.
4.Place a 90 degree angle bend in the glass tubing.
Safety Notes:
Wear an apron, wear safety glasses, and do NOT burn yourself.
Conclusion:
1. Write out the electron configuration chart and show the arrows which indicate which orbitals fill up first.