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Standard XII
Chemistry
Types of Unit Cell
a) what is la...
Question
a) what is lattice energy? b) what is lattice enthalpy in the formation of ionic bond? c) how packing of ions of opposite charges occur to form ionic solid?
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Q.
Lattice enthalpy is the change in energy that occurs when _____ of an ionic solid is sepearted into isolated ions in the gas phase.
Q.
Assertion
:
Lattice energy of
C
a
O
is higher than that of
N
a
C
l
.
Reason
:
The lattice energy of an ionic compund is directly proportional to the product of the charges of ions.
Q.
What is lattice enthalpy of an ionic crystals? Give the relation.
Q.
M
g
O
has a high melting point because due to the highly charged ions, ionic force is strong and lattice energy is........
Q.
In a crystal of an ionic compound, the ions of element B form the close-packed lattice, and the ions of element A occupy all the tetrahedral voids. The formula of the compound is:
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