Three that is the answer to your question
Answer:
What procedure did you use to complete the lab?
→Procedures that needs to be considered to complete the lab are- a thorough knowledge of lab assignments, knowledge about safety equipment, reviewing the MSDS of chemicals for lab experiment etc.
<h3>Explanation:</h3>
To be lab prepared one must follow these procedures-
1. One should have the knowledge of lab assignments to make the lab experiment easier.
2. To be aware about safety equipment and their uses in lab, like- the location of fire extinguisher in lab.
3. To know the steps of experiments to be performed
4. To fill notebook of lab with information regarding the experiment
5. One should review the data sheets of chemicals material safety.
6. To put on all the necessary dressings to perform experiment.
7. To have complete understanding about the experiment disposals.
Most similar would be phosphorus, because they have the same number of electrons in their outer orbitals, thus they create the same ions, and react with elements in a similar fashion.
Different would probably be aluminum. Aluminum is a metal while nitrogen is a non-metal, as seen by the colors above. Also, aluminum creates a positive ion (losses electrons to become stable) while nitrogen creates a negative ion (gains electrons to become stable)
Hope this helps!!