Name each of the following ionic compounds containing a polyatomic ion. Spell out the full name of the compound.
a. Ba (OH)2
b.NH4BR
c. NaClO4
d.FEPO4
e CoCrO4
f .KClO4
The correct answer and explanation is :
Here are the names of the given ionic compounds containing polyatomic ions:
a. Ba(OH)₂ – Barium hydroxide
b. NH₄Br – Ammonium bromide
c. NaClO₄ – Sodium perchlorate
d. FePO₄ – Iron(III) phosphate
e. CoCrO₄ – Cobalt(II) chromate
f. KClO₄ – Potassium perchlorate
Explanation:
- Identifying Ionic Compounds:
Ionic compounds consist of a metal (cation) and a non-metal or polyatomic ion (anion). In cases where polyatomic ions are present, their standard names must be used. - Barium Hydroxide (Ba(OH)₂):
- Ba²⁺ (Barium) and OH⁻ (Hydroxide) combine to form Barium hydroxide.
- Since barium has a fixed charge of +2, no Roman numeral is needed.
- Ammonium Bromide (NH₄Br):
- NH₄⁺ (Ammonium) is a polyatomic ion.
- Br⁻ (Bromide) is a simple anion.
- Together, they form Ammonium bromide.
- Sodium Perchlorate (NaClO₄):
- Na⁺ (Sodium) and ClO₄⁻ (Perchlorate) form Sodium perchlorate.
- No Roman numeral is needed since sodium has a fixed charge of +1.
- Iron(III) Phosphate (FePO₄):
- Fe³⁺ (Iron) and PO₄³⁻ (Phosphate) combine in a 1:1 ratio.
- Since iron can have multiple oxidation states, we specify it as Iron(III) phosphate.
- Cobalt(II) Chromate (CoCrO₄):
- Co²⁺ (Cobalt) and CrO₄²⁻ (Chromate) combine in a 1:1 ratio.
- Since cobalt can have multiple charges, we indicate Cobalt(II) chromate.
- Potassium Perchlorate (KClO₄):
- K⁺ (Potassium) and ClO₄⁻ (Perchlorate) form Potassium perchlorate.
- No Roman numeral is needed since potassium has a fixed charge of +1.
Understanding how to name ionic compounds correctly ensures clear communication in chemistry.