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NEET • Chemistry

Chemical Bonding

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table

Ionic Bond Formation Conditions

The source says ionic compound formation depends on ion formation and ionic arrangement in the crystalline lattice.

M(g)→M+(g)+e−M(g)\rightarrow M^+(g)+e^-
X(g)+e−→X−(g)X(g)+e^-\rightarrow X^-(g)
M+(g)+X−(g)→MX(s)M^+(g)+X^-(g)\rightarrow MX(s)
ConditionSource-backed statement

Electronegativity difference

Must be larger.

Ionisation enthalpy

Electropositive element must be low.

Electron gain enthalpy

Negative value for electronegative element should be high.

Lattice enthalpy

For the ionic solid must be high.