In Chemistry, the Reactivity Series (Activity Series) ranks metals from most reactive to least reactive. The position of a metal determines how it reacts with water, acids, and oxygen.
The least reactive metals — Gold (Au) and Platinum (Pt) — are found in nature in their pure form because they don't react with air or water.
Among commonly studied metals:
Potassium (K) > Sodium (Na) > Calcium (Ca) > Magnesium (Mg) > Aluminium (Al) > Zinc (Zn) > Iron (Fe) > Lead (Pb) > Copper (Cu) > Silver (Ag) > Gold (Au)
Memory trick: Please Send Cat Milk And Zinc Food Long Cats Sit Gouping
Sodium (Na) is highly reactive and reacts violently with water and even atmospheric moisture. Storing it in kerosene (an organic liquid) prevents contact with water or air.
Maleic Acid (Formula and Properties)
Learn about Maleic Acid. Understand its chemical formula (C4H4O4), its cis-isomer structure, and its massive industrial uses in making polymers.
Calculate Mass of KClO₃ to Liberate 6.72 L of O₂
Find mass of KClO₃ to liberate 6.72 L O₂ at STP. Answer: 24.5 g. Step-by-step solution using 2KClO₃ → 2KCl + 3O₂ with mole concept.
Molar Mass of Urea (NH2CONH2)
Learn how to accurately calculate the massive Molar Mass of Urea (NH2CONH2). Understand the atomic weights of Nitrogen, Carbon, Hydrogen, and Oxygen.
Why do Ionic Compounds have High Melting Points?
Get the perfect board exam answer explaining why ionic compounds like NaCl have incredibly high melting points due to strong electrostatic forces of attraction.
Mendeleev's Periodic Law and Periodic Table
Learn Mendeleev's Periodic Law. 'Properties of elements are a periodic function of their atomic masses.' Understand his predictions and limitations of his table.
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