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प्रश्न
Write a short note on the following type of element –
alkali metals
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 17
What are the following group known as?
Group 18
How do atomic structures (electron arrangements) change in a period with an increase in atomic numbers moving left to right?
What happens to the number of valence electrons in atoms of elements as we go down a group of the periodic table?
How many electrons do inert gases have in their valence shells?
Give reason:
Alkali metals and halogens do not occur free in nature.
Give reason:
Alkali and alkaline earth metal compounds usually form electrovalent compounds.
Select the correct answer from the options given below.
The most reactive halogen from group 17.
Give a reason for the following:
Noble gases do not form compounds readily.
Give a reason for the following:
Group 1 [I – A] elements are called alkali metals.
