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प्रश्न
State the type of element for the following:
Sodium
पर्याय
Metal
Non-metal
Metalloid
Noble gas
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उत्तर
Metal
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संबंधित प्रश्न
Give the symbols and valencies of following radicals:
(a) Hydroxide (b) Chloride
(c) Carbonate (d) ammonium
(e) Nitrate
Define: Elements-
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.
Hydrogen by ‘H’
Write the formula of the compound formed – given symbols and combining power or capacity (valency) of the following element in the compound.
K1+ Cl1-
State the type of element for the following:
potassium
Give the symbol of the following element:
Xenon
Give three reasons why – carbon dioxide is considered a compound, while carbon – an element.
Give the symbol of the following element:
Phosphate
Give the formula of the following gas:
Nitrous oxide
State a reason why the symbol of calcium is ‘Ca’ and of copper is ‘Cu’
