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प्रश्न
Name and state the following with reference to the elements of the first three periods of the periodic table.
Noble gas with duplet arrangement of electrons.
उत्तर
Element is Helium
संबंधित प्रश्न
What are the following group known as?
Group 17
What are the following group known as?
Group 18
Name two elements of each group.
Name and state the following with reference to the elements of the first three periods of the periodic table.
Noble gas having electronic configuration: 2, 8, 8.
Write the electronic configuration of the first two alkaline earth metals.
How many electrons do inert gases have in their valence shells?
Give reason:
Inert gases do not form compounds.
State the main helpful features of the long form of the periodic table.
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.
