Answer:
duplet-A set of two things or people
Octet-A group of 8 things or people
Here this might help you added the website link:
https://phet.colorado.edu/sims/html/build-an-atom/latest/build-an-atom_en.html
Explanation:
smoking is the main reason
The empirical formula for a compound that has
1.5 moles of copper and 0.5 moles of
phosphorus is CuP.
Explanation:
Filter the sand and sea salt from water.
Add water and wait for sea salt to dissolve.
Filter sand from salt water.
Heat and evapourate salt water for salt.