Advertisements
Advertisements
प्रश्न
Write the formula of the following compound:
Lead [II] sulphate
Advertisements
उत्तर
Lead [II] sulphate - PbSO4 - `"SO"_4^(2-)`
APPEARS IN
संबंधित प्रश्न
Explain the difference between 2N and N2.
Write down the formulae for the following compounds :
Calcium oxide
Fill in the blank:
Formula of iron (ill) carbonate is _____ .
Give the empirical formula of Glucose C6H12O6 .
Name the element in the compound and give the formula of the following compound:
Ethanol
Write the formula of the following compound:
Potassium hydroxide
Write the formula of the following compound:
Sodium nitrite
Write the formula of the following compound:
Calcium bisulphite
Write the formula of the following compound:
Magnesium chloride
Write the formula of the following compound:
Zinc oxide
Write the formula of the following compound:
Aluminium chloride
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
(NH4)3SO4
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
NaO
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
KNO3
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
NaClO
Find the valency of the element which is underlined in the following formula.
- NaCl
- CO2
- Al (PO4)
- Ba (NO3)2
- CaCl2
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 |

There is ______ oxygen atom is water molecule.
Play a game for writing formula.
Example 1: Make placards with symbols and valencies of the elements separately. Each student should hold two placards, one with the symbol in the right hand and the other with the valency in the left hand. Keeping the symbols in place, students should criss-cross their valencies to form the formula of a compound.
