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प्रश्न
Write the radical of the following valency:
magnesium
विकल्प
1+
2+
3+
1−
2−
3−
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उत्तर
2+
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संबंधित प्रश्न
Explain the terms 'valency' and 'variable valency'.
Match the symbols of metallic elements – with their correct combining power or capacity.
(a) K
(b) Zn
(c) Al
(d) Na
(e) Ca
Combining power or capacity – A : 3 ; B : 2 ; C : 1. (positive valencies)
State the type of element for the following:
Phosphorus
Give the formula of the following acid:
Sulphuric
Give the formula of the following gas:
Nitric oxide
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).
Bisulphite
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).
Carbonate
Define the term ‘symbol’.
What does the symbol '(l)' present in a chemical equation, mean?
______ of some elements are derived from Latin or Greek names of the elements.
