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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
उत्तर
nitrogen and iron
Elements X and Y, most likely, are nitrogen and iron.
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संबंधित प्रश्न
What do you understand by :
Noble gases
The scientist who proposed the first letter (or first letter and another letter) of the Latin or English name of
an element as its symbol, was :
State what a chemical formula denotes.
Give the symbol of the following element:
Mercury
Give the symbol of the following element:
Phosphorus
State the type of element for the following:
Chlorine
Write the radical of the following valency:
Bromine [Bromide]
Write the radical of the following valency:
Potassium
Give the formula of the following acid:
Sulphuric
State the valency of the following metallic element and write symbol with the valency
Sodium
