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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 17
What are the following group known as?
Group 18
Name and state the following with reference to the elements of the first three periods of the periodic table.
Noble gas having electronic configuration: 2, 8, 8.
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.
Name the gas used in:
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Give reason:
Alkali and alkaline earth metal compounds usually form electrovalent compounds.
Write a short note on the following type of element –
alkaline earth metals
Write a short note on the following type of element –
halogens
State the main helpful features of the long form of the periodic table.
