📚 Key Concepts
Electronic Configuration- Group 1 (ns¹)
- Group 2 (ns²)
General Properties- Atomic & ionic size
- Ionization energy
- Electropositive character
- Oxidation states
- Metallic character
🎯 Key Formulas
Key Reactions
- With Water
- 2Na + 2H₂O → 2NaOH + H₂
- Ca + 2H₂O → Ca(OH)₂ + H₂
- With Oxygen
- 2Na + ½O₂ → Na₂O
- 2Mg + O₂ → 2MgO
- Formation of Peroxides/Superoxides
- Na + O₂ → NaO₂ (superoxide)
- K + O₂ → KO₂
- 2Na + O₂ → Na₂O₂ (peroxide)
⚠️ Common Mistakes to Avoid
Confusion in diagonal relationshipsWrong reactivity orderIncorrect hydration energiesMixing up flame colorsWrong solubility patternsIncorrect complex formation
📖 Knowledge Prerequisites
Periodic trendsChemical bondingRedox reactionsSolution chemistryComplex formation
💡 Tips for Students
Learn flame test colorsRemember reactivity patternsUnderstand diagonal relationshipsKnow biological rolesPractice writing balanced equationsRemember hydration trends
👉 Practice Recommedations
Compare properties across periodsWrite balanced equationsSolve numerical problemsStudy complex formationCompare reactivity patterns
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