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प्रश्न
Write the formula of the following compound:
Magnesium bicarbonate
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उत्तर
Magnesium bicarbonate - Mg[HCO3]2 - `"HCO"_3^(1-)`
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संबंधित प्रश्न
Write down the formulae of sodium oxide.
The element having atomicity 'four' is most likely to be :
Write down the formulae for the following compounds :
Calcium oxide
Name the following compounds. Also write the symbols/formulae of the ions present in them :
- CuSO4
- (NH4)2SO4
- Na2O
- Na2CO3
- CaCl2
Define ‘formula unit’ of an ionic compound. What is the formula unit of (i) sodium chloride, and
(ii) magnesium chloride ?
Give the formula and valency of:
| Aluminate | ______ | ______ |
Correct the following statement:
A molecular formula represents an element.
Correct the following statement:
Formula of iron (lll) oxide is FeO.
Identify the following substance:
An alkaline gas A which gives dense white fumes with hydrogen chloride.
Name the element in the compound and give the formula of the following compound:
Phosphoric acid
Write the formula of the following compound:
Calcium hydroxide
Write the formula of the following compound:
Zinc sulphate
Write the formula of the following compound:
Aluminium carbonate
Write the formula of the following compound:
Aluminium hydroxide
Write the formula of the following compound:
Diamine silver chloride
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
(NH4)3SO4
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.
Derive the chemical formula for calcium chloride.
