Question

Fill in the name and empirical formula of each ionic compound that could be formed from the ions in this table: Some ionic compounds cation anion empirical formula name of compound Na Bro, xs ? Na+ Bro 2+ Fe CH,co,

Answer 1

To get formula of ionic compounds from their ions , use criss-cross method.

Not Bro Nat Broy Fe²+ CH₂ CO NaBrO4 Fe(CH₂C002 Iron (11) NaBrO₂ Södium Bromite Sodium Perbromate acetate

In criss-cross method , the oxidation state of one ion serves as the subscript for the other and vice versa.

Rules for naming lonic compounds :- 1. The name of cation is written first followed by the name of anion. 2. For d block elements the oxidation state of the metal is written in Roman numerals enclosed in brackets. 3. The name of a compound always ends in 'ide'.