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प्रश्न
Write a short note on the following type of element –
alkali metals
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उत्तर
Elements of I-A group like Li, Na, K, Rb, Cs, fr are called alkali metals because these metals react with water to form alkalis and hydrogen.
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संबंधित प्रश्न
What are the following group known as?
Group 1
What are the following group known as?
Group 17
How do alkaline earth metals occur in nature?
Give reason:
Alkali metals are kept in an inert solvent.
Write a short note on the following type of element –
halogens
‘The periodic table contains elements methodically grouped together’.
State the main helpful features of the long form of the periodic table.
Name or state following with reference to the element of the first three periods of the periodic table.
An alkaline earth metal in period 3.
Give a reason for the following:
Noble gases do not form compounds readily.
State the following:
The group whose elements are unreactive or inert.
