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प्रश्न
State whether the following statement is true or false:
The symbol of element cobalt is CO.
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उत्तर
False. The symbol for the element Cobalt is Co, as the second letter of the symbol of an element has to be in the lower case.
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संबंधित प्रश्न
On what principle are the following methods of separation based? Give one example of a mixture for each of the methods mentioned in which they are used
Magnetic separation
Fill in the blank:
Dalton used symbol _____ for oxygen and _____ for hydrogen.
Give the names and symbols of the first twenty elements of the periodic table.
State the type of element for the following:
Fluorine
State the type of element for the following:
Silicon
Write the radical of the following valency:
magnesium
Give the formula of the following gas:
Sulphur dioxide
Define the term ‘valency’.
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Silver
write symbol with the variable valency
Write the constituent elements and their symbols for the following compounds.
- Carbon monoxide
- Washing soda
