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SingaporeChemistryQuick questions
Atomic Structure and Chemical Bonding
Quick questions on Atomic structure and isotopes explained: O-Level Chemistry
5short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is the structure of the atom?Show answer
An atom has a tiny central nucleus containing protons and neutrons, surrounded by electrons arranged in shells. The three sub-atomic particles have these properties:
What are isotopes?Show answer
Isotopes are atoms of the same element with the same number of protons but different numbers of neutrons. They have the same proton number but different nucleon numbers. For example, chlorine has and .
What is q1?Show answer
State the relative mass and charge of a neutron. [1 mark]
What is q2?Show answer
An atom has proton number and nucleon number . State its number of neutrons and its electronic configuration. [2 marks]
What is q3?Show answer
Explain why two isotopes of the same element have identical chemical properties. [2 marks]
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