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प्रश्न
Give reason:
Alkali metals and halogens do not occur free in nature.
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उत्तर
Alkali metals and halogens are very reactive; hence, they do not occur in the free state in nature.
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संबंधित प्रश्न
Name and state the following with reference to the elements of the first three periods of the periodic table.
Noble gas with duplet arrangement of electrons.
Name and state the following with reference to the elements of the first three periods of the periodic table.
Group whose elements have zero valencies.
Name the first three alkaline earth metals.
How do alkaline earth metals occur in nature?
Name the gas used in:
Filling balloons
Give reason:
Alkali and alkaline earth metal compounds usually form electrovalent compounds.
Give reason:
Inert gases do not form compounds.
Write a short note on the following type of element –
noble gases
Give a reason for the following:
Noble gases do not form compounds readily.
State the following:
The group from the groups 1 [IA], 2 [IIA], 16 [VIA] and 7 [VIIA] whose elements are most electronegative.
