which one of the following have max L.E

Dinesh khalmaniya Best Answer
size of ions - Ca+2 > Mn+2>Cu+2>Ni+2. here Ni+2 ion smallest in size and we know that lattice energy is inversely proportional to size. so NiCl2 have maximum lattice energy
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Dinesh khalmaniya
please accept the answer if you got it 🙏
Dinesh khalmaniya
hope this will help you 🙏
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Priyanshu kumar
see the unusual variation in ionic radii
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Priyanshu kumar
NiF2 has highest lattice energy
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Priyanshu kumar
among the given 4 molecule the size of Ni2+ is less than Ca2+,mn2+and cu2+
Priyanshu kumar
as you know size smaller, charge density is more so attraction more
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Priyanshu kumar
attraction more means more lattice energy
A
Akanksha gupta
but sir here CFSE is maximum of cu+2
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Priyanshu kumar
see size of Ni2+...and Cu2+
A
Akanksha gupta
sir here cu+2 have maximum L.E
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Priyanshu kumar
see there is unusual variation in ionic radii among transition metal cations and data also suggest that NiF2 has little bit more L.E than CuF2(3046 for NiF2 n 3042 for CuF2) as you...
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Dinesh khalmaniya
check it
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A
Akanksha gupta
L.E of transition metal ion in +2 o.s maximum L.E is cuf2+2
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Suman Kumar
NiF2 will have highest Lattice energy. It is tough to decide between Ni²+ & Cu²+ halide lattice energy. Sometimes Nickel win sometime copper win.
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