write down the chemical formular for the following compounds

Question

1.Sodium flouride
2.Berillium chloride
3.Pottasium iodide
4.Rubidium bromide
5.Magnesium sulphide

Answer 1

NaCl
BeF2
KI
What's the problem here? What do you not understand about this? The periodic table almost TELLS you what to write.