What is the particle that an atom can lose or gain in order to form a charged ion

Atoms will gain or lose electrons in order to become charged ions.

Atoms that lose electrons become positively charged cations.

Atoms that gain electrons become negatively charged anions.

Atoms will gain or lose electrons in order to become charged ions.

double the distance = divide strength by 4

the total distance traveled by the car is

30km + 49km = 79 km .