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Crystal Lattice and Unit Cell

15. The corre...

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15. The correct order of lattice energy of the following ionic compounds is 1 NaCl>MgCl2>CaO>Al2O3 2NaCl>CaO>MgCl2>Al2O3 3 Al2O3>CaO>MgCl2>NaCl 4Al2O3>MgCl2>CaO>NaCl

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Which of the following is not an ionic compound ? Give reasons.

a.NaCl. b.)CH3COOH

c.)MgCl2. c.)CaO

C a O

N a C l

have the same crystal structure and approximately the same ionic radii. If

U

is the lattice energy of

N a C l

, the approximate lattice energy of

C a O

Q. Arrange the following in the order given below :

Increasing covalent character of

N a C l, M g {C l}_{2}, A l {C l}_{3}

A l {C l}_{3} < M g {C l}_{2} < N a C l

.
If true enter 1, else enter 0.

Q. Considering only lattice enthalpy, arrange them in the increasing order of their stability:

N a C l

M g C l_{2}

M g O

N a C l

C a C l_{2}

are also added to fused

M g C l_{2}

in the electrolysis of

M g C l_{2}

. Select the correct statement.

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