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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.
Hydrogen by ‘H’
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उत्तर
Symbols: The short form or abbreviated name of the element (or radicals). The reason for representing the following element by its symbol is as follow:
Hydrogen by ‘H’ – First letter of the name of the element
संबंधित प्रश्न
Define: Compounds
Fill in the blank:
Dalton used symbol _____ for oxygen and _____ for hydrogen.
Give the symbol and the number of atoms of the following elements present in water.
Write the radical of the following valency:
Nitrate
Give a reason – Magnesium [2, 8, 2] has valency 2+.
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Copper
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).
Carbonate
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).
Zincate
Define Alchemy.
Antimony has the highest tensile strength.
