Question 1
Question detail
Why does the arrangement of electrons in shells help an atom remain electrically neutral?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
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Topic
Atoms and isotopes
Question
Why does the arrangement of electrons in shells help an atom remain electrically neutral?
Answer
When the number of electrons in the shells equals the number of protons in the nucleus, the total positive charge of the protons balances the total negative charge of the electrons. This charge balance means the atom has no overall electrical charge and is therefore electrically neutral.
Explanation
This answer shows the link between electron arrangement and electrical neutrality, testing comprehension of charge balance in atoms.
Common mistake
Misconception about electron orbits
Students often think electrons orbit the nucleus in fixed circular paths like planets.
Explain that electrons are negatively charged particles that occupy discrete energy levels or shells around the nucleus, described by probability clouds rather than fixed circular orbits.
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