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CHEMISTRY: TOPIC 3 PERIODICITY

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Question:

What are the characteristics of group 17 elements?

Author: Sammy Universe



Answer:

Soluble in H2O = becomes colourless MP increases bec of increasing molar mass (london forces get stronger) Atomic radii increases Electronegativity decreases as atomic radii increase IE decreases Electron affinity: less exothermic down reactivity decreases = F is strongest oxidising agent more reactive halogen can displace the less reactive halogen


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