Advertisements
Advertisements
Question
Write the formula of the following compound:
Magnesium oxide
Advertisements
Solution
Magnesium oxide - MgO - `"Mg"^(2+)"O"^(2-)`
APPEARS IN
RELATED QUESTIONS
Write the chemical formula of the Copper nitrate.
What is the significance of the formula of a substance ?
An element Z has a valency of 3. What is the formula of oxide of Z ?
An element X has a valency of 4 whereas another element Y has a valency of 1. What will be the formula of the compound formed between X and Y ?
Correct the following statement:
Molecular formula of water is H2O2
Write the formula of the following compound:
Sodium plumbite
Write the formula of the following compound:
Magnesium nitrate
Write the formula of the following compound:
Magnesium sulphate
Write the formula of the following compound:
Copper [I] oxide
Write the formula of the following compound:
Iron [II] oxide
Define the term Relative atomic mass. State why indirect methods are utilised to determine the absolute mass of an atom. Explain in brief the indirect method used.
Define the term Relative molecular mass. State why indirect methods are utilised to determine the absolute mass of an atom. Explain in brief the indirect method used.
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
Mg(SO4)2
What do you understand by chemical formula of a compound? What is its significance?
Write the molecular formulae for the following compounds
Aluminium (III) nitrate
Write the molecular formulae for the following compounds
Calcium (II) phosphate
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 |
