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प्रश्न
An element which can exhibit valencies of 2, 4 and 6 can be :
पर्याय
copper
iron
mercury
sulphur
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उत्तर
Sulphur
Sulphur exhibits the valencies of 2, 4 and 6.
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संबंधित प्रश्न
Give the names and symbols of five familiar substances which you think are elements.
What is meant by atomicity? Name the diatomic element.
Match the metallic elements – with their correct symbols Metallic elements
| Metallic elements | Symbol |
| (a) Potassium | (1) Ca |
| (b) Sodium | (2) Zn |
| (c) Calcium | (3) Pb |
| (d) Magnesium | (4) Hg |
| (e) Zinc | (5) Cu |
| (f) Aluminum | (6) Au |
| (g) Iron | (7) K |
| (h) Lead | (8) Fe |
| (i) Copper | (9) Al |
| (j) Mercury | (10) Na |
| (k) Silver | (11) Mg |
| (l) Platinum | (12) Pt |
| (m) Gold | (13) Ag |
Give the symbol of the following element:
Potassium
Give the symbol of the following element:
Radon
Write the radical of the following valency:
Chlorine [Chloride]
Write the chemical formula of the following:
calcium carbonate
State whether the following ion or radical given below of a non-metallic element exhibits valency: 1–, 2– or 3–. (write the ion or radical with the correct valency).
Aluminate
What does the symbol '(g)' present in a chemical equation, mean?
What does a chemical symbol represent?
