SPM Chemistry Practice Questions - Sijil Pelajaran Malaysia (SPM) - Chemistry Kimia (4541) Exam

Isotopes of an element have the same chemical properties. Which statement correctly explains why?

They have the same number of neutrons They have the same nucleon number They have the same number of valence electrons because they have the same proton number They have different numbers of protons but the same number of electrons

Correct Answer:

They have the same number of valence electrons because they have the same proton number

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