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प्रश्न
Write a short note on the following type of element –
noble gases
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उत्तर
Element of 18th or O group (He, Ne, Ar, Kr, Xe, Rn) is called noble gases as they are inert gases and have valency 0. All are mono-atomic.
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संबंधित प्रश्न
Consider the following elements: Be, Li, Na, Ca, K. Name the elements of (a) same group (b) same period.
What is meant in the periodic table by a group?
Name two elements of each group.
What happens to the number of valence electrons in atoms of elements as we go down a group of the periodic table?
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.
Name the method by which alkali metals can be extracted.
How do alkaline earth metals occur in nature?
Give reason:
Inert gases do not form compounds.
Write a short note on the following type of element –
alkali metals
Select the correct answer from the options given below.
The most reactive halogen from group 17.
