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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).
Nitride
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उत्तर
| Name | Symbol | Ion | Valency |
| Nitride | \[\ce{N}\] | \[\ce{N^{3-}}\] | −3 |
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संबंधित प्रश्न
Give the symbols and valencies of following radicals:
(a) Hydroxide (b) Chloride
(c) Carbonate (d) ammonium
(e) Nitrate
What is the significance of the symbol of an element ? Explain with the help of an example.
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 |
For writing a chemical formula – ‘symbols’ and combining capacity of an element with hydrogen i.e. ‘valency’ should be known. Explain the term – combining the capacity of an element i.e. valency.
Select the correct answer from the choice given below.
The type of element-phosphorus
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The molecular equation is :
Zn + H2SO4 → ZnSO4 + H2[g].
State what [g] represents.
State the type of element for the following:
Boron
State the type of element for the following:
Sodium
The pictorial symbol for water given by the alchemists was
In the same way in chemistry, each element is denoted by a ______.
