Which one of the following is not explained by the Dalton's atomic theory?

Which one of the following could not explained by Rutherford's nuclear model?

Which one of the following ions is not iso-electronic with F⁻ ?

Which one of the following statements is not correct?

Which one among the following elements is polyatomic ?

Which one of the following findings is NOT observed in Rutherford's Nuclear Model of Atom ?