Determine the number of protons and the number of electrons in each ion. a. Al3 b. Se2- c. Ga3 d. Sr2

The object's initial distance above the groundthe object's initial velocity

Hi. i believe this is called a scientific  theory.cheers!

In atoms, the electron carries a negative elementary or unit charge; the proton carries a positive charge. the two types of charge are equal and opposite. in an atom of matter, an electrical charge occurs whenever the number of protons in the nucleus differs from the number of electrons surrounding that nucleus.