Give the formulae of the compounds formed from the following sets of elements.
a) Calcium and fluorine
b) Hydrogen and sulphur
c) Nitrogen and hydrogen
d) Carbon and chlorine
e) Sodium and oxygen
f) Carbon and oxygen

Give the formulae of the compounds that will be formed from the following sets of elements. (a) Calcium and fluorine (b) Magnesium and oxygen (c )Sodium and sulphur (d) Carbon and chlorine (e )Carbon and sulphur (f) Nitrogen and hydrogen.

Write the formulae of the compounds of hydrogen formed with sodium and chlorine.

Predict the formula of the stable binary compounds formed by the combination of the following pairs of elements. (a). Lithium and oxygen (b) magnesium and nitrogen (c) phosphorus and fluorine.

Predict the formula of the stable binary compounds that would be formed by the combination of the following pairs of elements. a.Lithium and oxygen b. Magnesium and nitrogen c. Aluminium and iodine d. Silicon and oxygen e. Phosphorus and fluorine f. Element 71 and fluorine

Predict the formula of the stable binary compounds that would be formed by the combination of the following pairs of elements. a.Lithium and oxygen b. Magnesium and nitrogen c. Aluminium and iodine d. Silicon and oxygen e. Phosphorus and fluorine f. Element 71 and fluorine