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Barium chloride is an inorganic compound with the formula Ba Cl 2.It is one of the most common water-soluble salts of barium.Like most other water-soluble barium salts, it is a white powder, highly toxic, and imparts a yellow-green coloration to a flame.
The circumstances under which a compound will have ionic or covalent character can typically be understood using Fajans' rules, which use only charges and the sizes of each ion. According to these rules, compounds with the most ionic character will have large positive ions with a low charge, bonded to a small negative ion with a high charge. [25]
When treated with water, beryllium chloride forms a tetrahydrate, BeCl 2 •4H 2 O ([Be(H 2 O) 4]Cl 2).BeCl 2 is also soluble in some ethers. [7] [8]When suspended in diethyl ether, beryllium chloride converts to the colorless dietherate: [9]
Melting point: High, since melting means breaking covalent bonds (rather than merely overcoming weaker intermolecular forces). [ 5 ] Solid-phase electrical conductivity : Variable, [ 6 ] depending on the nature of the bonding: network solids in which all electrons are used for sigma bonds (e.g. diamond, quartz) are poor conductors, as there are ...
When barium chlorate is heated with a fuel, it burns to produce a vibrant green light, which is also a flame test for the presence of bariom ions. Because it is an oxidizer, a chlorine donor, and contains a metal ion, this compound produces a distinctive green colour.
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Strontium chloride can be prepared by treating aqueous strontium hydroxide or strontium carbonate with hydrochloric acid: . Sr(OH) 2 + 2 HCl → SrCl 2 + 2 H 2 O Crystallization from cold aqueous solution gives the hexahydrate, SrCl 2 ·6H 2 O. Dehydration of this salt occurs in stages, commencing above 61 °C (142 °F).
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