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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 are the following group known as?
Group 1
What happens to the number of valence electrons in atoms of elements as we go down a group of the periodic table?
Name the first three alkaline earth metals.
Write the electronic configuration of the first two alkaline earth metals.
How many electrons do inert gases have in their valence shells?
Name the gas used in:
Light bulbs
Give reason:
Alkali metals and halogens do not occur free in nature.
Give reason:
Inert gases do not form compounds.
Write a short note on the following type of element –
noble gases
State the main helpful features of the long form of the periodic table.
