CaO and \[~NaCl\] have the same crystal structure and approximately the same ionic radii. If U is the lattice energy of \[~NaCl\], the approximate lattice energy of \[CaO\] is

CaO and \[~NaCl\] have the same crystal structure and approximately th

1.	CaO and \[~NaCl\] have the same crystal structure and approximately the same ionic radii. If U is the lattice energy of \[~NaCl\], the approximate lattice energy of \[CaO\] is
A.	U/2
B.	U
C.	4C
D.	2 U
Answer» D. 2 U

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CaO and \[~NaCl\] have the same crystal structure and approximately the same ionic radii. If U is the lattice energy of \[~NaCl\], the approximate lattice energy of \[CaO\] is

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