If you fail, never give up because FAIL means 'First Attempt In Learning'.— A. P. J. Abdul Kalam

Structure of the Atom — quick quiz

5 real SOF NSO questions on Structure of the Atom. Instant scoring and solutions, no signup — see where you stand in ~3 minutes.

Question 1 of 5

EASY

An atom of an element has 17 protons, 18 neutrons and 17 electrons. What is the mass number of this atom?