IGCSE O Level Chemistry MCQs - Chapter 14
Structure of Atom Multiple Choice Questions (MCQs) PDF Download - 1
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Structure of Atom MCQs with Answers PDF Download: MCQ Quiz 1
If the proton (p+) number of an element changes, it will become a/an
- isotope
- another element
- electrolyte
- none of above
In the periodic table, the period number indicates the number of
- neutrons
- protons
- electrons
- photons
Chlorine's (Cl) relative atomic mass is 35.5. this half number is due to
- isotopes
- a half proton
- a half neutron
- a half electron
Purpose of a mass spectrometer is to determine the
- charge of a particle
- particles
- mass of an atom
- data for data loggers
Number of electrons (e-) in phosphorus (P) is 15, valence electrons shall be
- 2
- 8
- 5
- 4
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