please show me the process to do this 2 exercises

question 4 and 6

full work

thanks

4) Use the periodic table to predict the charges that the following atoms will have when they form ions. a) Ca b) 0 c) Br d) Al e) Cs 6) Indicate what types of chemical bonds are present in the following compounds (ionic, covalent, or both). a) H2O b) CaCl2 c) CuO d) NaNO3 e) (NH4)SO4 f) SF6