Lithium, Sodium and potassium were put in the same group on the basis of their similar properties.
i) What is the similarity in their properties?
i) Li, Na and K are very reactive alkali metals, which react with water with the formation of an alkali and hydrogen gas.
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X and Y are two elements having which have similar properties and obey Newland's land of octaves. How many elements are there in-between X and Y?