Water solible basic hydroxides are called alkalis.sodium hydroxide,potassium hydroxide,ammonium hydroxide, and calcium hydroxide are alkalis.alkalis react with acids to form salts and water.all bases are not alkalis but all alkalis are bases.
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The alkali metals are a group in the periodic table consisting of the chemical elements lithium (Li), sodium (Na),[note 1] potassium (K),[note 2] rubidium (Rb), caesium (Cs),[note 3] and francium (Fr).[4] This group lies in the s-block of the periodic table[5] as all alkali metals have their outermost electron in an s-orbital.[6][7][8] The alkali metals provide the best example of group trends in properties in the periodic table,[6] with elements exhibiting well-characterized homologous behaviou
he physical and chemical properties of the alkali metals can be readily explained by their having an ns1 valence electron configuration, which results in weak metallic bonding. Hence, all the alkali metals are soft and have low densities,[6] melting[6] and boiling points,[6] as well as heats of sublimation, vaporization, and dissociation.[9]:74 They all crystallize in the body-centered cubic crystal structure,[9]:73 and have distinctive flame colours because their outer s electron is very easily
Group 1: The Alkali Metals.
Alkali metals are the chemical elements found in Group 1 of the periodic table.
The alkali metals include: Lithium (Li), Sodium (Na), Potassium (K), Rubidium (RB), Cesium (Cs), and Francium (Fr)