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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
Give the symbol and the number of atoms of the following elements present in zinc chloride.
In the chemical word equation – Zinc + Sulphuric acid → Zinc sulphate + Hydrogen
The molecular equation is :
Zn + H2SO4 → ZnSO4 + H2[g].
State what [g] represents.
Give the symbol of the following element:
Phosphorus
Give the symbol of the following element:
Aluminium
State the type of element for the following:
Oxygen
State the type of element for the following:
Lead
Write the radical of the following valency:
magnesium
Select the correct answer from the choice in the bracket.
The formula of caustic soda.
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).
Aluminate
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
