Ton The table below gives information about the ions T' and Z-
T-
22
Electron arrangement 2.8
2.8.8
Number of neutrons 12
16
(a) How many protons are there in the nucleus of ?
(1) Element T?
(1) Element Z?​

The answer to your question is c. mitochondria.

Each calcium ion has a charge of +2, which can also be written as ca2+. if those ions move out of the neuron and no other ions are moving, the neuron would lose the positive charge associated with those ions and become more negatively charged.