Of the elements magnesium, calcium, and barium, which will form the ion with the largest radius?

Barium will have the largest radius since it’s located in the most bottom of the periodic table and magnesium will be the smaller radius .

Atomicity occurs to prevent updates of the database occurring only partially, which can cause greater problems than rejecting the whole series outright.some are monatomic, diatomic, triatomic etc because it shows the number of atoms. for example, monatomic means it contains only one atom.