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Please assist me with this, any help is useful

Write out the compound created by each of the pairs:
1. Ca and F
2. Cu (1+) and S
3. Cr (3+) and N
4. Fe (3+) and O
5. Mn (4+) and S
6. Ru (8+) and P
7. Li and CI
8. Au (2+) and Br