Most atoms contain electrons, protons and neutrons - Edexcel - GCSE Chemistry - Question 4 - 2012 - Paper 1
Question 4
Most atoms contain electrons, protons and neutrons.
(a) Describe the positions of these particles in atoms.
(b) A chlorine atom contains 17 electrons.
What is the ... show full transcript
Worked Solution & Example Answer:Most atoms contain electrons, protons and neutrons - Edexcel - GCSE Chemistry - Question 4 - 2012 - Paper 1
Step 1
Describe the positions of these particles in atoms.
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Answer
In an atom, protons and neutrons are located in the nucleus, which is at the center of the atom. Protons are positively charged particles, while neutrons have no charge. Electrons, which are negatively charged, orbit around the nucleus in specific energy levels or shells.
Step 2
What is the electronic configuration of a chlorine atom?
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Answer
The electronic configuration of a chlorine atom, which has 17 electrons, can be represented as:
2.8.7
This means there are 2 electrons in the first shell, 8 electrons in the second shell, and 7 electrons in the outer shell.
