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प्रश्न
Write the chemical formula of the following:
calcium sulphide
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उत्तर
CaS
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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.
Name the elements represented by the following symbols :
Hg, Pb, Au, Ag, Sn
Fill in the blank:
Symbol represents _____ atom(s) of an element.
Give the symbol of the following element:
Phosphorus
State the type of element for the following:
Phosphorus
Name the following:
An acid whose formula is ‘H2CO3’.
State a reason why the symbol of calcium is ‘Ca’ and of copper is ‘Cu’
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).
Phosphate
The pictorial symbol for water given by the alchemists was
