Born-Haber cycle is used to determine
Electro negativity
Lattice energy
Both
None of these
The magnitude of the lattice energy of a solid increases if
The ions are large
The ions are small
The ions are of equal size
Charges on the ions are small
The crystal lattice of electrovalent compounds is composed of
Atoms
Molecules
Oppositely charged ions
Both molecules and ions
Most favourable conditions for ionic bonding are
Low charge on ions, large cation, large anion
Low charge on ions, large cation, small anion
High charge on ions, large cation, small anion
High charge on ions, small cation, large anion
Which one of the following factors does not favour the formation of ionic bond
Low ionization energy of one atom
High electron affinity of one atom
High lattice energy of both atoms
High electronegativity of both atoms
Ionic bonds are formed between elements which have
No affinity for electrons
Non-metallic property
No electronegativity difference
Large electronegativity difference
An atom of one element A has 3 electrons in its outermost shell, and that B has 6 electrons in the outermost shell. The formula of the compound formed by these two is
A3 B6
A2B
A2B3
A3B2
Two element X and Y have following electronic configuration
X = 1s2, 2s22p6, 3s23p6, 4s2 and Y = 1s2, 2s22p6, 3s23p5
The compound formed by combination of X and Y is
XY2
X5Y2
X2Y5
XY5
Which is likely to have the highest melting point
He
CsCl
NH3
CHCl3
Property of ionic compounds is
High melting point and high boiling point
High melting point and low boiling point
Low melting point and high boiling point
Low melting point and low boiling point
Which will not conduct electricity
Aqueous KOH solution
Fused NaCl
Graphite
KCl in solid state
In which of the compound, there is an electrovalent linkage
An electrovalent compound does not exhibit space isomerism because of
Presence of oppositely charged ions
High melting points
Non-directional nature of the bond
Crystalline nature
Which of the following species contain non-directional bond
NH3
CsCl
NH4+
BeF2
Ionic reactions are
Fast
Slow
Very slow
None of these