Which on is more stable and why ortho hydrogen and para hydrogem?

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.

it forms an anion that has a larger radius. anions have a negative charge and are larger than the original atom.

i think tornado but not 100%