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प्रश्न
State the type of element for the following:
potassium
विकल्प
Metal
Non-metal
Metalloid
Noble gas
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उत्तर
Metal
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संबंधित प्रश्न
Select elements and compounds from the following list: Iron, plaster of paris, chalk, common salt, copper, aluminium, calcium oxide, cane sugar, carbon, silica, sodium sulphate, uranium, potassium carbonate, silver, carbon dioxide.
What is the significance of the symbol of an element ? Explain with the help of an example.
In the chemical word equation –
Zinc + Sulphuric acid → Zinc sulphate + Hydrogen.
State the reactants and products of the above reaction. What does the arrow indicate?
Give the symbol of the following element:
Arsenic
State the type of element for the following:
Sulphur
Write the chemical formula of the following:
zinc oxide
Give the formula of the following gas:
Sulphur dioxide
Give a reason – Magnesium [2, 8, 2] has valency 2+.
What does the symbol '(s)' present in a chemical equation, mean?
Describe the different ways in which we can write the symbols of elements. Give appropriate examples.
