Advertisements
Advertisements
प्रश्न
If the valency of carbon is 4 and that of sulphur is 2, work out the formula of the compound formed by the combination of carbon with sulphur. What is the name of this compound ?
Advertisements
उत्तर
Valency of carbon = 4
Valency of sulphur = 2
Element : c s
Valencies : 4 2
Formula for the compound containing carbon and sulphur can be worked out by crossing the valencies of the constituent elements.
Thus, formula of the compound (formed by the combination of carbon and sulphur) is C2S4. The formula has a common factor of 2; therefore, dividing the formula by the common factor gives us the simplest chemical formula, i.e., CS2.
This compound is called carbon disulphide.
APPEARS IN
संबंधित प्रश्न
What do the symbols, H2, S and O4 mean in the formula H2SO4 ?
Name the element in the compound and give the formula of the following compound:
Carbonic acid
Write the formula of the following compound:
Sodium nitrate
Write the formula of the following compound:
Sodium sulphate
Write the formula of the following compound:
Iron [III] chloride
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
Mg(SO4)2
Write the molecular formulae for the following compounds
Aluminium (III) nitrate
Write the molecular formulae for the following compounds
Calcium (II) phosphate
Write the molecular formulae for the following compounds
Mercury (II) chloride
Complete the following crossword puzzle (Fig. 3.1) by using the name of the chemical elements. Use the data given in Table.
| Across | Down | ||
| 2 | The element used by Rutherford during his α–scattering experiment | 1 | A white lustrous metal used for making ornaments and which tends to get tarnished black in the presence of moist air |
| 3 | An element which forms rust on exposure to moist air | 4 | Both brass and bronze are alloys of the element |
| 5 | A very reactive non–metal stored under water | 6 | The metal which exists in the liquid state at room temperature |
| 6 | Zinc metal when treated with dilute hydrochloric acid produces a gas of this element which when tested with burning splinter produces a pop sound. | 8 | An element with symbol Pb |
