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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
On what principle are the following methods of separation based? Give one example of a mixture for each of the methods mentioned in which they are used
Magnetic separation
An element which can exhibit valencies of 2, 4 and 6 can be :
Give two examples of the following:
Solid + Liquid mixture
Match the symbols of non-metallic elements with their correct combining power or capacity.
(a) O
(b) S
(c) Cl
Combining power or capacity A : 3; B : 2; C : 1. (negative valencies)
Match the formulas of the following of bases with their correct names.
Bases – (a) NaOH (b) KOH (c) Ca(OH)2 (d) Zn(OH)2
Names – (1) Potassium hydroxide (2) Zinc hydroxide (3) Aluminium hydroxide (4) Calcium hydroxide (5) Sodium hydroxide
State the type of element for the following:
Copper
State the type of element for the following:
Arsenic
Write the radical of the following valency:
Sulphite
Write the chemical formula of the following:
calcium sulphide
State the valency of the following metallic element and write symbol with the valency
Aluminium
