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Halogen

Classwork Series and Exercises {Chemistry – SS1}: Halogens

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Chemistry SS 2 Week 1 Topic: Halogens Introduction The halogens are the collective name given to the elements in group VII of the Periodic Table. There are five halogens; fluorine, chlorine, bromine, iodine and astatine. Astatine is very radioactive and cannot exist for more than a few microseconds before decaying. We will thus be concerned […]

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Why Do We Pay More For Electricity Even Though We Now Use Less Than We Used To?

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You may have noticed that your household pays more for electricity than you did few years ago. Though, more households – including yours – may have replaced halogen bulbs with energy-saving bulbs, yet you still have to pay more in electricity bill. What exactly are the reasons? Below is the breakdown of energy use for

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