11. Write the formula for potassium oxide.

12. Write the formula for dihydrogen monoxide.

13. Write the formula for sodium bromide.

14. What is the name of MgCl2

15. What is the name of IF5

11. The formula for potassium oxide is K2O. The potassium ion has a charge of 1+ and the oxygen ion has a charge of 2-.

12. Formula of dihydrogen monoxide is, H2O.The first part of the name, "dihydrogen," implies the presence of two hydrogen atoms. The second part, "monoxide," implies the presence of one oxygen atom.

13.  Sodium bromide chemical formula is NaBr Formula and structure: Sodium bromide chemical formula is NaBr and the molar mass is 102.89 g mol-1.

14. Magnesium dichloride

15. Iodine pentafluoride

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