JAMB Chemistry 2012 Objective — Question 9

Question 9 of 50 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2012 Objective paper, with the correct answer and a full explanation.

A hydrogen atom which has lost an electron contains

A. one proton onlyCorrect
B. one neutron only
C. one proton and one neutron
D. one proton, one electron and one neutron

Explanation

A hydrogen atom has one proton and one electron (no neutron in the common isotope). If it loses its electron, it is left with one proton only.

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