IGCSE O Level Chemistry Exam MCQs – Practice Test 4 (Chapter 14)
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The "Structure of Atom Notes" App Download: If the proton number is 19, the electron configuration will be; MCQ with answers: 2,8,18, 2,8,7, 2,8,8,1, and 2,8,8,3. Practice Kinetic Theory Quiz Questions, download Kobo e-Book (Free Chapter) to complete chemistry coursework.
MCQ 16: In an atom, the number of protons and neutrons are added to obtain:
MCQ 17: If the proton number is 19, the electron configuration will be:
MCQ 18: If the nucleon number of potassium is 39, the number of neutrons will be:
MCQ 19: First element in periodic table to have 8 valence electrons is:
MCQ 20: All are noble gases except:
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