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प्रश्न
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)
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उत्तर
(a) K — Valency-1 (C)
(b) Zn — Valency-2 (B)
(c) Al — Valency-3 (A)
(d) Na — Valency-1 (C)
(e) Ca — Valency-2 (B)
संबंधित प्रश्न
Give two symbols which have been derived from the "English names" of the elements.
Explain the terms 'valency' and 'variable valency'.
Select the correct answer from the choice given below.
The symbol of mercury is
Elements are mainly classified into metals and non-metals. State six properties of metals which differ from non-metals.
Give the symbol of the following element:
Oxygen
Give the symbol of the following element:
Phosphorus
Give the symbol of the following element:
Hydroxide
Write the chemical formula of the following:
magnesium oxide
Define the term ‘valency’.
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
