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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.
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उत्तर १
Noble gases
उत्तर २
Group is 18th or O group
संबंधित प्रश्न
What are the following group known as?
Group 18
Name the first three alkaline earth metals.
How many electrons do inert gases have in their valence shells?
Name the gas used in:
Filling balloons
Name the gas used in:
Bright colour advertising light works
Give reason:
Inert gases do not form compounds.
‘The periodic table contains elements methodically grouped together’.
Name or state following with reference to the element of the first three periods of the periodic table.
An alkaline earth metal in period 3.
Give a reason for the following:
Noble gases do not form compounds readily.
State the following:
The group which contains highly reactive electronegative non-metals including chlorine.
