Answer The valency of fluorine in CaF₂ is 1. Detailed Explanation The chemical formula is: CaF₂ Here: Calcium has a valency of 2, while fluorine has a valency of 1. To make the compound electrically neutral: Ca²⁺ + 2F⁻ → CaF₂ Therefore, each fluorine atom has a charge of −1, and its valency is 1. … Read more
How to Create an HTML Table How to Create an HTML Table Creating a table in HTML is very simple. First, you need to understand four basic HTML table elements. <table> = Complete Table <tr> = Table Row <th> = Heading Cell <td> = Data Cell 1. The Most Basic HTML Table Suppose you want … Read more
🧪 Acetic Acid / Ethanoic Acid Questions 1–17 – Detailed Answers & Explanations 📚 Important Related Questions – Q1 to Q17 1. Why is pure acetic acid known as glacial acetic acid? ✅ Answer Pure acetic acid is called glacial acetic acid because it freezes at about 16.6°C and forms ice-like crystals on cooling. 💡 … Read more
Mr. Durani – Gold Chain & Car Profit/Loss Question Mr. Durani bought a gold chain for ₹1,80,000 and a car for ₹3,20,000. The value of the gold chain grows at 30% p.a., while the car depreciates by 20% in the first year and 15% p.a. thereafter. If both are sold after 3 years, find the … Read more