(Ex.Q.5)
Write the names and symbols of the constituent elements and identify their valencies from the molecular formulae given below.

${CaCl}_{2}, {CCl}_{4}, HI, H_{2} S, {Na}_{2} S,$

Open in App

Solution

Compounds Name of compounds Symbol of constituent elements Valency of constituent elements

${CaCl}_{2}$ Calcium chloride Ca, Cl Ca = 2, Cl = 1

${CCl}_{4}$ Carbon tetrachloride C, Cl C = 4, Cl = 1

$HI$ Hydrogen iodide H, I H = 1, I = 1

$H_{2} S$ Hydrogen sulphide H, S H = 1, S = 2

${Na}_{2} S$ Sodium sulphide Na, S Na = 1, S = 2

Suggest Corrections

Similar questions

Write true or false. Correct the false statement.

The chemical formulae of different compounds can be written easily if the symbols and the valencies of the elements are known.

{CaCl}_{2}, {CCl}_{4}, HI, H_{2} S, {Na}_{2} S,

KCl, HBr, {MgBr}_{2}, K_{2} O

Join BYJU'S Learning Program

Compounds	Name of compounds	Symbol of constituent elements	Valency of constituent elements
${CaCl}_{2}$	Calcium chloride	Ca, Cl	Ca = 2, Cl = 1
${CCl}_{4}$	Carbon tetrachloride	C, Cl	C = 4, Cl = 1
$HI$	Hydrogen iodide	H, I	H = 1, I = 1
$H_{2} S$	Hydrogen sulphide	H, S	H = 1, S = 2
${Na}_{2} S$	Sodium sulphide	Na, S	Na = 1, S = 2