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प्रश्न
Two elements X and Y have valencies of 5 and 3, and 3 and 2, respectively. The elements X and Y are most likely to be respectively :
पर्याय
copper and sulphur
sulphur and iron
phosphorus and nitrogen
nitrogen and iron
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उत्तर
nitrogen and iron
Elements X and Y, most likely, are nitrogen and iron.
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संबंधित प्रश्न
Give two symbols which have been derived from the " Latin names" of the elements.
Explain the terms 'valency' and 'variable valency'.
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’
Give the symbol of the following element:
Zinc
Give the symbol of the following element:
Arsenic
Give the symbol of the following element:
Silicon
Give the symbol of the following element:
Platinum
Give the symbol of the following element:
Carbonate
Write the radical of the following valency:
Calcium
Give a reason – Magnesium [2, 8, 2] has valency 2+.
