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Electronegativity (Pauling)
NaCl
Sodium chloride
ΔEN2.23Ionic character71.2%Molar mass58.44g/mol
Mostly ionic bonding · ΔEN 2.23 (≥ 1.8)
Atoms in this species
ClChlorine × 13.16
NaSodium × 10.93
Scale runs from caesium (0.79) to fluorine (3.98). Ionic character uses Pauling's 100 × (1 − e^(−0.25 ΔEN²)).
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