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प्रश्न
State the type of element for the following:
Oxygen
विकल्प
Metal
Non-metal
Metalloid
Noble gas
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उत्तर
Non-metal
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संबंधित प्रश्न
How are the elements with variable valency named? Explain with an example.
Write the radical of the following valency:
Sodium
Give the formula of the following acid:
Nitric
Select the correct answer to the statement given below:
An element present in the earth’s crust, atmosphere and the human body.
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Iron
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).
Bromide
Give the qualitative and quantitative meaning of the term ‘symbol’.
The symbol of tungsten is _______.
Define Alchemy.
What is the significance of the symbol of an element?
