What is the difference between a monatomic ion and a polyatomic ion what is the difference between a polyatomic ion and a monatomic ion? ;

There is one atom in a Monoatomic Ion whereas Many in Polyatomic.

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since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

qualitative observation deals with data that can be observed with our senses: sight, smell, touch, taste, and hearing. they do not involve measurements or numbers. for instance, colors, shapes, and textures of objects are all qualitative observations.