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प्रश्न
Give a reason for the following:
Group 1 [I – A] elements are called alkali metals.
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उत्तर
Elements of the I – A group are metals, react with water to form alkalis.
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संबंधित प्रश्न
What is meant in the periodic table by a group?
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 with duplet arrangement of electrons.
How do alkaline earth metals occur in nature?
How many electrons do inert gases have in their valence shells?
Give reason:
Alkali and alkaline earth metal compounds usually form electrovalent compounds.
Write a short note on the following type of element –
noble gases
‘The periodic table contains elements methodically grouped together’.
State the following:
The group whose elements are unreactive or inert.
