What helps in determining the formula of an ionic compound?
Valency helps in determining the formula of an ionic compound. Valency can be used to find out how the atoms of an element will combine with the atoms of another element to form a compound.
For example: Magnesium chloride
By applying criss-cross method:
Thus, the formula for magnesium chloride is MgCl2.
Rate this question :
Write the chemical formula using criss-cross method:
(a) Ammonium sulphate
(b) Magnesium bicarbonate
(c) Barium nitrate
Together with Science
What helps in determining the formula of an ionic compound?Together with Science
Calculate the molecular mass of ethanoic acid, CH3 COOH.
(Atomic masses: C = 12 u; H = 1 u; O = 16 u)Lakhmir Singh & Manjit Kaur - Chemistry
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 oxygenNCERT Science - Exemplar
What rules are to be kept in mind while writing a chemical formula?Evergreen - Science
Write the symbols/formulae of two simple ions and two compound ions (or polyatomic ions).Lakhmir Singh & Manjit Kaur - Chemistry
The valencies (or charges) of some of the ions are given below:
Using this information, write down the formulae of:
(i) Sodium sulphide
(ii) Copper nitrateLakhmir Singh & Manjit Kaur - Chemistry
Calculate the molecular masses of the following compounds:
(a) Hydrogen sulphide, H2S
(b) Carbon disulphide, CS2Lakhmir Singh & Manjit Kaur - Chemistry
Calculate the molecular mass of hydrogen bromide (HBr). (Atomic masses: H = 1 u; Br = 80 u)Lakhmir Singh & Manjit Kaur - Chemistry