Give Electronic Configuration of the above ions:
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Answers
Explanation:
Characteristic reactions of Cu²⁺
The +2 oxidation state is more common than the +1. Copper(II) is commonly found as the blue hydrated ion, [Cu(H2O)4]2+ .
Aqueous Ammonia
Copper(II) ion reacts with stoichiometric quantities of aqueous ammonia to precipitate light blue Cu(OH)2. Some basic salts may also form
Most common oxidation state: +3; +2 and +6 also exist. The +3 oxidation state is the most stable.
M.P. 1857º
B.P. 2672º
Density 8.94 g/cm3
Characteristics: Chromium is a silvery, rather brittle metal. Similar to aluminum, but exhibits several oxidation states.
Aqueous Ammonia
Ammonia reacts with chromium(III) ion to precipitate gray-green chromium(III) hydroxide:
Explanation:
cu2+= [Ar]3d⁸
cr3+= [Ar]3d²
Fe2+=[Ar]3d⁶
Fe3+=[Ar]3d⁵
H- = 1s²
S2- = 1s²2s²2p⁶3s²3p⁶