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प्रश्न
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).
Sulphide
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उत्तर
| Name | Symbol | Ion | Valency |
| Sulphide | \[\ce{S}\] | \[\ce{S^{2-}}\] | −2 |
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संबंधित प्रश्न
What is the significance of the symbol of an element ? Explain with the help of an example.
Fill in the blank:
Dalton used symbol _____ for oxygen and _____ for hydrogen.
Match the noble gases – with their correct symbols:
| Noble gases | Symbols |
| (a) Helium | (1) Ar |
| (b) Neon | (2) Xe |
| (c) Argon | (3) Rn |
| (d) Krypton | (4) He |
| (e) Xenon | (5) Kr |
| (f) Radon | (6) Ne |
Match the symbols of – radicals – with their correct combining power or capacity, (valency).
(a) OH
(b) So4
(c) No3
(d) Co3
Combining power or capacity – A : 3; B : 2; C : 1. (negative valencies)
Give the symbol of the following element:
Radon
State the type of element for the following:
Neon
State the type of element for the following:
Radon
Write the radical of the following valency:
Sodium
Write the radical of the following valency:
Calcium
Give the formula of the following gas:
Ammonia
