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Byju's Answer
Standard XII
Chemistry
Covalent Bond vs Ionic Bond
Which of the ...
Question
Which of the following does not favour formation of ionic bond?
A
Low ionization energy of metal
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B
High electron gain enthalpy of non metal
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C
Low lattice enthalpy
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D
Large cation and small anion
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Solution
The correct option is
C
Low lattice enthalpy
Ionic bond formation is accompanied by high lattice enthalpy
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2
Similar questions
Q.
"In ionic slids the sum of the electron gain enthalpy and ionization enthalpy may be positive but still the structure gets stabilised due to the energy released in the formation of the crystal lattice".explain.
Q.
The ionization enthalpy of
N
a
+
formation from
N
a
(
g
)
is
495.8
k
J
m
o
l
−
1
, while the electron gain enthalpy of Br is
−
325.0
k
J
m
o
l
−
1
. Given the lattice enthalpy of
N
a
B
r
is
−
728.4
k
J
m
o
l
−
1
. The energy for the formation of
N
a
B
r
ionic solid from Na(g) and Br(g) is (-)__________
×
10
−
1
k
J
m
o
l
−
1
Q.
The ionization enthalpy of
N
a
+
formation from
N
a
(
g
)
is
495.8
k
J
m
o
l
−
1
while the electron gain enthalpy of
B
r
is
−
325.0
k
J
m
o
l
−
1
. Given the lattice enthalpy of
N
a
B
r
is
−
728.4
k
J
m
o
l
−
1
. The energy for the formation of
N
a
B
r
ionic solid is (–) _____
×
10
−
1
k
J
m
o
l
−
1
.
Q.
The ionic bonds
X
+
Y
−
are formed when
(I) electron affinity of
Y
is high
(II) ionization energy of
X
is low
(III) lattice energy of
X
Y
is high
(IV) lattice energy of
X
Y
is low
Q.
Chemical compounds in which anions and cations are held together by electrostatic force of attraction are known as ionic compounds. Cations and anions are charged species which are formed by losing and gaining electron(s) respectively to attain the nearest noble gas configuration or stability. Usually metals lose their valence electrons to form cations while non-metals accept electrons and form anions. Being held by a strong electrostatic force of attraction between ions, ionic compounds have high melting and boiling points.
(i) Which of the following electronic configuration is correct for the given elements?
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