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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 two elements of each group.
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.
Name the alkali metals, How many electron(s) they have in their outermost orbit.
Take any one alkali metal and write its reaction with (i)oxygen (ii)water (iii)acid.
Name the first three alkaline earth metals.
How many electrons do inert gases have in their valence shells?
Name the gas used in:
Filling balloons
Give reason:
Alkali metals are kept in an inert solvent.
Write a short note on the following type of element –
noble gases
State the following:
The group whose elements are unreactive or inert.
