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Clarify that the proton number, also known as atomic number, refers to the number of protons found in an atom's nucleus.

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Cambridge IGCSE Combined ScienceAtoms, elements and compoundsCore content

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Clarify that the proton number, also known as atomic number, refers to the number of protons found in an atom's nucleus

This point belongs to Atomic structure and the Periodic Table, especially Atomic structure and the Periodic Table outcomes.
You need to be able to clarify that the proton number, also known as atomic number, refers to the number of protons found in an atom's nucleus.
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Proton Number

The proton number is a key concept in atomic structure, representing the number of protons in an atom's nucleus. It is crucial for identifying elements and understanding their properties.

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Define the term 'proton number'.
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Related learning objectives

Explain the atom's structure, which consists of a central nucleus made up of neutrons and protons, with electrons arranged in shells around it.
Atomic structure and the Periodic Table outcomes
Identify the relative charges and masses of protons, neutrons, and electrons.
Atomic structure and the Periodic Table outcomes
Clarify that the mass number, or nucleon number, is the sum of protons and neutrons in an atom's nucleus.
Atomic structure and the Periodic Table outcomes
Identify the electronic configuration for elements with atomic numbers ranging from 1 to 20, such as 2,8,3.
Atomic structure and the Periodic Table outcomes
Recognize that: (a) noble gases in Group VIII have a complete outer shell, (b) the number of outer-shell electrons corresponds to the group number for Groups I to VII, and (c) the number of occupied electron shells matches the period number.
Atomic structure and the Periodic Table outcomes

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