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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 18
Name two elements of each group.
Name the first three alkaline earth metals.
Give reason:
Alkali metals are kept in an inert solvent.
Give reason:
Alkali metals and halogens do not occur free in nature.
Give reason:
Alkali and alkaline earth metal compounds usually form electrovalent compounds.
State the characteristics which remain similar in moving down in a group of the periodic table.
Write a short note on the following type of element –
halogens
‘The periodic table contains elements methodically grouped together’.
State the following:
The group whose elements are unreactive or inert.
