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

Options

A. `""^(16)O_(8)`
B. `""^(18)O_(8)`
C. `""^(18)Ne_(10)`
D. `""^(16)O_(8)^(2-)`

Answer

D

Explanation

From the given data, it is clear that the atomic no. Z, of the species is 8 (no. of protons). Since the no. of electrons are two more than the no. of protons, hence, it is a binegative species. Thus, the species is `""^(16)O_(8)^(2-)`.