amphoteric वाक्य
उदाहरण वाक्य
मोबाइल
- Beryllium, for example, is classified as an alkaline earth metal although its amphoteric chemistry and tendency to mostly form covalent compounds are both attributes of a chemically weak or post transition metal.
- Since the alumina is amphoteric, it dissolves in the sodium hydroxide, leaving impurities less soluble at high pH such as iron oxides behind in the form of a highly alkaline red mud.
- It has an unusual crystalline structure featuring mixed metallic-covalent bonding and low symmetry It bonds covalently in most of its compounds, has an amphoteric oxide; and can form anionic gallates.
- They react with amphoteric oxides : for example, the oxides of aluminium, zinc, tin, and lead react with the alkali metal hydroxides to give aluminates, zincates, stannates, and plumbates.
- The oxides of indium in its preferred oxidation state of + 3, namely In 2 O 3 and In ( OH ) 3 are weakly amphoteric; it forms anionic indates in strongly basic solutions.
- Chromium ( III ) hydroxide ( Cr ( OH ) 3 ) is amphoteric, dissolving in acidic solutions to form [ Cr ( H 2 O ) 6 ] 3 +, and in basic solutions to form.
- Some other elements which form amphoteric oxides are gallium, indium, scandium, titanium, zirconium, vanadium, chromium, iron, cobalt, copper, silver, gold, germanium, tin, antimony, bismuth, and tellurium
- The oxide ( CuO ) is amphoteric, with predominating basic properties; it can be fused with alkali oxides ( M 2 O; M = Na, K ) to give anionic oxycuprates ( M 2 CuO 2 ).
- Steele notes the paradoxical chemical behaviour of aluminium : " It resembles a weak metal in its amphoteric oxide and in the covalent character of many of its compounds . . . Yet it is a highly high negative electrode potential ".
- The hydroxyl groups coating an oxide surface such as that of SiO 2 can donate or accept a proton and thus behave in an amphoteric way as illustrated by the following acid-base reactions occurring at the oxide-electrolyte interface:
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