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प्रश्न
An element which can exhibit valencies of 2, 4 and 6 can be :
पर्याय
copper
iron
mercury
sulphur
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उत्तर
Sulphur
Sulphur exhibits the valencies of 2, 4 and 6.
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संबंधित 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.
Helium by ‘He’
State what a chemical formula denotes.
Give the formula of the following gas:
Nitrogen dioxide
Give the formula of the following gas:
Nitrogen
State the valency of the following metallic element and write symbol with the valency
Chromium
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Silver
write symbol with the variable valency
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).
Bisulphate
Complete the statement given below by filling in the blanks with the correct words.
From the elements – He, Br, Pt and O; the element which forms a polyatomic molecule is ________ and which is liquid at room temperature is ________.
What does the symbol '(s)' present in a chemical equation, mean?
Define Alchemy.
