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प्रश्न
State the type of element for the following:
Arsenic
पर्याय
Metal
Non-metal
Metalloid
Noble gas
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उत्तर
Metalloid
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संबंधित प्रश्न
State whether the following statement is true or false:
The symbol of element cobalt is CO.
How are the elements with variable valency named? Explain with an example.
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’
State the type of element for the following:
Calcium
Write the radical of the following valency:
Aluminium
Write the chemical formula of the following:
aluminium chloride
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).
Nitrate
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).
Hydroxide
