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प्रश्न
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.
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उत्तर
The combining power of an element especially as measured by the number of hydrogen atoms can combine or displace with the element.
संबंधित प्रश्न
Give the symbols and valencies of following radicals:
(a) Hydroxide (b) Chloride
(c) Carbonate (d) ammonium
(e) Nitrate
Select elements and compounds from the following list: Iron, plaster of paris, chalk, common salt, copper, aluminium, calcium oxide, cane sugar, carbon, silica, sodium sulphate, uranium, potassium carbonate, silver, carbon dioxide.
The formula of the sulphate of an element M is M2(SO4)3
Write the formula of it
Phosphate
Give two examples of the following:
Solid + Liquid mixture
Give the symbol of the following element:
Oxygen
State the type of element for the following:
Platinum
State the type of element for the following:
Radon
Write the radical of the following valency:
Aluminium
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).
Hydroxide
The chemical symbol for sodium is
