Which symbol represents a salt?

c2h2

nacl

o2

c6h12o6

you need to give more information

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.

5.6⋅10−^19  j

do you need the explaination?