Common Polyatomic Ions: Quick Revision Flashcards

Created by noeticforce

Created 9 days ago

Ammonium

NH₄⁺

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About this set

30 terms

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Mode: Flashcards
Last updated: Just now

Review 30 common polyatomic ions with easy flashcards. Each card shows the ion’s name, formula, and charge—great for quick study, exams, or classroom practice.

Quick Tips:

Remember: “-ate” ions have more oxygen than “-ite” ions — nitrate (NO₃⁻) vs nitrite (NO₂⁻), sulfate (SO₄²⁻) vs sulfite (SO₃²⁻).
The order Hypo < ite < ate < Per shows oxygen count: hypochlorite (ClO⁻), chlorite (ClO₂⁻), chlorate (ClO₃⁻), perchlorate (ClO₄⁻).
Group ions by families (like nitrates, sulfates, phosphates, chlorates) to notice patterns and reduce memorization work.

About this set30 terms

Progress0 / 30

ModeFlashcards

Last updatedJust now

Review 30 common polyatomic ions with easy flashcards. Each card shows the ion’s name, formula, and charge—great for quick study, exams, or classroom practice.

Quick Tips:

Remember: “-ate” ions have more oxygen than “-ite” ions — nitrate (NO₃⁻) vs nitrite (NO₂⁻), sulfate (SO₄²⁻) vs sulfite (SO₃²⁻).
The order Hypo < ite < ate < Per shows oxygen count: hypochlorite (ClO⁻), chlorite (ClO₂⁻), chlorate (ClO₃⁻), perchlorate (ClO₄⁻).
Group ions by families (like nitrates, sulfates, phosphates, chlorates) to notice patterns and reduce memorization work.

Ammonium
NH₄⁺
Not Started
Hydronium
H₃O⁺
Not Started
Hydroxide
OH⁻
Not Started
Nitrate
NO₃⁻
Not Started
Nitrite
NO₂⁻
Not Started
Sulfate
SO₄²⁻
Not Started
Sulfite
SO₃²⁻
Not Started
Phosphate
PO₄³⁻
Not Started
Hydrogen phosphate
HPO₄²⁻
Not Started
Dihydrogen phosphate
H₂PO₄⁻
Not Started
Carbonate
CO₃²⁻
Not Started
Bicarbonate (hydrogen carbonate)
HCO₃⁻
Not Started
Chromate
CrO₄²⁻
Not Started
Dichromate
Cr₂O₇²⁻
Not Started
Permanganate
MnO₄⁻
Not Started
Hypochlorite
ClO⁻
Not Started
Chlorite
ClO₂⁻
Not Started
Chlorate
ClO₃⁻
Not Started
Perchlorate
ClO₄⁻
Not Started
Acetate
C₂H₃O₂⁻ (or CH₃COO⁻)
Not Started
Cyanide
CN⁻
Not Started
Thiocyanate
SCN⁻
Not Started
Oxalate
C₂O₄²⁻
Not Started
Peroxide
O₂²⁻
Not Started
Borate
BO₃³⁻
Not Started
Silicate
SiO₃²⁻
Not Started
Arsenate
AsO₄³⁻
Not Started
Thiosulfate
S₂O₃²⁻
Not Started
Hypophosphite
H₂PO₂⁻
Not Started
Peroxydisulfate
S₂O₈²⁻
Not Started