Quote:
Originally Posted by ghulammujtaba86
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ghulam bhai you have misunderstood the question: It was not about Alkali metals. It was about an Alkali.
I will quote the same sources to you, kindly go through them.
Alkali - Wikipedia, the free encyclopedia
lemme write the initial definition:
In chemistry, an alkali ( /ˈælkəlaɪ/; from Arabic: Al-Qaly القلي, القالي ) is a basic, ionic salt of an alkali metal or alkaline earth metal element. Some authors also define an alkali as a base that dissolves in water. A solution of a soluble base has a pH greater than 7. The adjective alkaline is commonly used in English as a synonym for base, especially for soluble bases. This broad use of the term is likely to have come about because alkalis were the first bases known to obey the Arrhenius definition of a base and are still among the more common bases.
another source please:
Chemical metallurgy: principles and ... - Google Books
and i quote: "very few alkalis are known the most common being sodium hydroxide (caustic soda) .....calcium hydroxide (slaked lime).