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प्रश्न
State the type of element for the following:
potassium
विकल्प
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
The atoms of which of the following pair of elements are most likely to exist in free state ?
Define atomic mass unit. What is its symbol ?
What is a symbol? What information does it convey?
Match the symbols of – radicals – with their correct combining power or capacity, (valency).
(a) OH
(b) So4
(c) No3
(d) Co3
Combining power or capacity – A : 3; B : 2; C : 1. (negative valencies)
State the type of element for the following:
Mercury
Give the symbol of the following element:
Nitrate
Write the radical of the following valency:
Carbonate
Define the term ‘symbol’.
What is the rarest natural element on the earth?
