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Which of the following statements (s) ab...

Which of the following statements (s) about the modern periodic table are incorrect ?
(i) The elements in the modern periodic table are arranged on the basis of their decreasing atomic numbers
(ii) The elements in the modern periodic table are arranged on the basiss of their increasing atomic mases.
(iii) Isotopes are placed in adjoining group(s) in the periodic table
(iv) The elements in the modern periodic table are arranged on the basis of their increasing atomic number.

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