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प्रश्न
Name and state the following with reference to the elements of the first three periods of the periodic table.
Group whose elements have zero valencies.
उत्तर १
Noble gases
उत्तर २
Group is 18th or O group
संबंधित प्रश्न
What are the following group known as?
Group 1
Name the method by which alkali metals can be extracted.
Name the first three alkaline earth metals.
How do alkaline earth metals occur in nature?
Name the gas used in:
Filling balloons
Give reason:
Alkali metals and halogens do not occur free in nature.
Give reason:
Inert gases do not form compounds.
Give a reason for the following:
Noble gases do not form compounds readily.
State the following:
The group from the groups 1 [IA], 2 [IIA], 16 [VIA] and 7 [VIIA] whose elements are most electronegative.
State the following:
The group whose elements are unreactive or inert.
