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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 18
Take any one alkali metal and write its reaction with (i)oxygen (ii)water (iii)acid.
How do alkaline earth metals occur in nature?
Write the electronic configuration of the first two alkaline earth metals.
Comment on the (i) reactivity (ii) colour (iii) physical state of group 17 elements.
Give reason:
Alkali metals are kept in an inert solvent.
Give reason:
Alkali and alkaline earth metal compounds usually form electrovalent compounds.
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:
Group 1 [I – A] elements are called alkali metals.
