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प्रश्न
Write a short note on the following type of element –
alkali metals
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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
Arrange the Elements of Group 17 and Group 1 According to the Given Conditions.
Increasing order of atomic size,
Consider the following elements: Be, Li, Na, Ca, K. Name the elements of (a) same group (b) same period.
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.
How do alkaline earth metals occur in nature?
Give reason:
Inert gases do not form compounds.
‘The periodic table contains elements methodically grouped together’.
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:
Noble gases do not form compounds readily.
State the following:
The group whose elements are unreactive or inert.
