Sksksk isjsjs jsjsjs jsjsjs jsjsjs jsjsjs ksjss
Answer:
A mixture of molecules is a group of molecules in which there are multiple different elements and atoms, that are in either fixed proportions or random. There are heterogeneous and homogenous mixtures.
Explanation:
1 Hydrogen 1s1
2 Helium 1s2
3 Lithium 2s1
The formula is SrCl2. hope this helps