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(a) A chloride ion, a fluorine atom and a nanoparticle are all types of particles - Edexcel - GCSE Chemistry - Question 1 - 2020 - Paper 1
Question 1
(a) A chloride ion, a fluorine atom and a nanoparticle are all types of particles. Which of the following shows the particles in order of size, starting from the sma... show full transcript
Worked Solution & Example Answer:(a) A chloride ion, a fluorine atom and a nanoparticle are all types of particles - Edexcel - GCSE Chemistry - Question 1 - 2020 - Paper 1
Step 1
Which of the following shows the particles in order of size, starting from the smallest?
Answer
The correct order from smallest to largest is: D (fluorine atom, chloride ion, nanoparticle). This is because a nanoparticle is generally larger than both an individual atom (fluorine) and an ion (chloride).
Step 2
Step 3
Explain why the anion in X cannot be known for certain.
Answer
The anion in solution X cannot be determined with certainty because both chloride and bromide ions can create a cream/yellow precipitate with silver nitrate. Without further specific testing, such as adding additional reagents or conducting colorimetric analysis, we cannot definitively identify the presence of chloride versus bromide.