O Level Courses

Chapter 14: IGCSE O Level Chemistry Exam Tests

IGCSE O Level Chemistry MCQs - Chapter 14

Structure of Atom Multiple Choice Questions (MCQ) PDF - 4

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Structure of Atom Questions & Answers PDF Download: MCQ Quiz 4

MCQ 16: In an atom, the number of protons and neutrons are added to obtain

A) number of electrons
B) number of nucleons
C) atomic number of element
D) number of positrons

MCQ 17: If the proton number is 19, the electron configuration will be

A) 2,8,7
B) 2,8,18
C) 2,8,8,1
D) 2,8,8,3

MCQ 18: If the nucleon number of potassium is 39, the number of neutrons will be

A) 39
B) 19
C) 20
D) 29

MCQ 19: First element in periodic table to have 8 valence electrons is

A) nitrogen
B) oxygen
C) fluorine
D) neon

MCQ 20: All are noble gases except

A) Helium
B) Neon
C) Argon
D) Xeon

Structure of Atom Learning App & Free Study Apps

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Structure of Atom App (Android & iOS)

Structure of Atom App (Android & iOS)

O Level Chemistry App (Android & iOS)

O Level Chemistry App (Android & iOS)

10th Grade Chemistry App (Android & iOS)

10th Grade Chemistry App (Android & iOS)

9th Grade Chemistry App (Android & iOS)

9th Grade Chemistry App (Android & iOS)