CROATIAN-ENGLISH CHEMISTRY
DICTIONARY & GLOSSARY

 

en  Fajans’ rules

hr  Fajansova pravila


Fajans’ rules, formulated by American chemist of Polish origin. Kazimierz Fajans (1887-1975), indicating the extent to which an ionic bond has covalent character caused by polarisation of the ions. Covalent character is more likely if:

1. the charge of the ions is high;

2. the positive ion is small or the negative ion is large;

3. the positive ion has an outer electron configuration that is not a noble- gas configuration.

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