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प्रश्न
An atom of an element is denoted by a “symbol” Explain the meaning of the term ‘symbol’. State a reason for representing the following element by its symbol.
Copper by ‘Cu’
उत्तर
Symbols: The short form or abbreviated name of the element (or radicals) The reason for representing the following element by their symbol is as follow:
Copper by ‘Cu’ – Deriving symbols from their Latin names
संबंधित प्रश्न
Give the symbols and valencies of following radicals:
(a) Hydroxide (b) Chloride
(c) Carbonate (d) ammonium
(e) Nitrate
How are the elements with variable valency named? Explain with an example.
The formula of the sulphate of an element M is M2(SO4)3
Write the formula of its
Acetate
Write the formula of the compound formed – given symbols and combining power or capacity (valency) of the following element in the compound.
K1+ Cl1-
Give the symbol of the following element:
Platinum
Give the symbol of the following element:
Sulphate
Write the radical of the following valency:
Sodium
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).
Bromide
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).
Oxide
