Advertisements
Advertisements
प्रश्न
State the chemical symbols for the following elements :
Sodium, Potassium, Iron, Copper, Mercury, Silver.
Advertisements
उत्तर
Following are the chemical symbols of the listed elements:
- Sodium: Na
- Potassium: K
- Iron: Fe
- Copper: Cu
- Mercury: Hg
- Silver: Ag
APPEARS IN
संबंधित प्रश्न
What is meant by the symbol of an element ? Explain with examples.
What do the following abbreviations stand for ?
- O
- 2O
- O2
- 3O2
Correct the following statement:
Formula of iron (lll) oxide is FeO.
Write the formula of the following compound:
Potassium dichromate
Write the formula of the following compound:
Copper [II] sulphide
Which of the following represents a correct chemical formula? Name it.
Which of the following represents a correct chemical formula? Name it.
BiPO4
Write the molecular formulae for the following compounds
Aluminium (III) nitrate
Write the molecular formulae for the following compounds
Iron (III) sulphide
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 |
