Q. The number of electrons, neutrons and protons in a species are equal to 10, 8 and 8 respectively. The proper symbol of the species is
A) $\ ^{16}O_{8}$
B) $\ ^{18}O_{8}$
C) $\ ^{18}{Ne}_{10}$
D) $\ ^{16}O_{8}^{2 -}$
Explanation
(d) Number of electrons $= 8 + 2 = 10$
Number of protons = 8
Number of neutrons, $N = 8$
Atomic number, $Z =$ number of protons = 8
Mass number, $A = Z + N = 8 + 8 = 16$
The proper symbol of the species is $\ ^{16}O_{8}^{2 -}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.