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

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Group 18 elements (the noble gases) are chemically inert and exist as monatomic gases. What is the main reason for their chemical stability?

Their atoms have a stable, completely filled valence shell of electrons Their atoms have no electrons Their atoms have only one valence electron that is easily lost Their atoms gain electrons very readily

Correct Answer:

Their atoms have a stable, completely filled valence shell of electrons

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