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प्रश्न
The symbols of the elements cobalt, aluminium, helium and sodium respectively written by a student are as
follows. Which symbol is the correct one ?
विकल्प
CO
AL
He
So
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उत्तर
He
He is the correct symbol of helium.
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संबंधित प्रश्न
Define: Compounds
Give the symbol of the following element:
Calcium
Give the symbol of the following element:
Platinum
State the type of element for the following:
Carbon
Write the radical of the following valency:
Sodium
Give the formula of the following gas:
Ammonia
State the valency of the following metallic element and write symbol with the valency
Zinc
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Mercury
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
What is meant by the term ‘symbol’?
