A ${ } _ { 8 } ^ { 16 } \mathrm { O } ^ { 2 - }$ ion has __________ protons, __________ neutrons, and __________ electrons.

Question

Quizplus · Accepted Answer

The atomic number of oxygen is 8, which means it has 8 protons. The mass number of the ion is 16, which means it has 8 neutrons (16 - 8 = 8). The ion has a charge of 2-, which means it has gained 2 electrons. Therefore, it has 8 protons, 8 neutrons, and 10 electrons.

A 816O2−{ } _ { 8 } ^ { 16 } \mathrm { O } ^ { 2 - }816​O2−

A ${ } _ { 8 } ^ { 16 } \mathrm { O } ^ { 2 - }$