Formation of Ionic Compounds (VCE SSCE Chemistry): Flashcards
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Cations
Cations
Positively charged ions formed when metals lose electrons
Anions
Anions
Negatively charged ions formed when non-metals gain electrons
Octet rule
Octet rule
Atoms react to achieve 8 electrons in their outer shell
Why noble gases rarely react
Why noble gases rarely react
Already have 8 electrons in outer shell (stable configuration)
Electrical neutrality in ionic compounds
Electrical neutrality in ionic compounds
Total positive charges must equal total negative charges
Polyatomic ions
Polyatomic ions
Groups of atoms with overall charge acting as single unit
When to use brackets in ionic formulas
When to use brackets in ionic formulas
When more than one polyatomic ion is needed
Electrovalency
Electrovalency
The charge on an ion
Roman numerals in compound names (e.g. iron(III))
Roman numerals in compound names (e.g. iron(III))
Indicate charge on metals with variable electrovalency
Simple anion naming convention
Simple anion naming convention
Name ends in '-ide' (e.g. oxygen → oxide)