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प्रश्न
Write the symbols for the following elements.
- Oxygen
- Gold
- Calcium
- Cadmium
- Iron
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उत्तर
| S.No | Element | Symbols |
| (i) | Oxygen | O |
| (ii) | Gold | Au |
| (iii) | Calcium | Ca |
| (iv) | Cadmium | Cd |
| (v) | Iron | Fe |
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संबंधित प्रश्न
Write the names and symbols of the first twenty elements that you have studied in class VI & VII.
Give the symbols and valencies of following radicals:
(a) Hydroxide (b) Chloride
(c) Carbonate (d) ammonium
(e) Nitrate
The formula of the sulphate of an element M is M2(SO4)3
Write the formula of it
Oxide
The formula of the sulphate of an element M is M2(SO4)3
Write the formula of it
Phosphate
Give the symbol of the following element:
Magnesium
Write the radical of the following valency:
magnesium
Write the chemical formula of the following:
magnesium oxide
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Copper
write symbol with the variable valency
What does the symbol '⇌' present in a chemical equation, mean?
The name copper was taken from ______.
