CH-1569
Group 17 halogens
Chemistry · Secondary 4 · Medium · Group 17 halogens
Three halogens, A₂, B₂ and C₂, are added to separate solutions of sodium halides NaA, NaB and NaC. The observations are:
• A₂ displaces B₂ from NaB but shows no reaction with NaC.
• B₂ does not react with NaA or NaC.
• C₂ displaces both A₂ and B₂ from NaA and NaB.
What is the order of reactivity of the halogens, from most to least reactive?
• A₂ displaces B₂ from NaB but shows no reaction with NaC.
• B₂ does not react with NaA or NaC.
• C₂ displaces both A₂ and B₂ from NaA and NaB.
What is the order of reactivity of the halogens, from most to least reactive?
- A₂, B₂, C₂
- A₂, C₂, B₂
- B₂, A₂, C₂
- C₂, A₂, B₂
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