Which of the following statement s about the Modern Periodic Table are incorrect i The elements in t...........

Chemistry Chapter - 5

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Which of the following statement (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 number

(ii) The elements in the Modern Periodic Table are arranged on the basis of their increasing atomic masses

(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

(i) only

(i), (ii) and (iii)

(i), (ii) and (iv)

(iv) only

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Explanation:

Elements in the Modern Periodic Table are arranged on the basis of their increasing atomic number hence option i) is wrong . In modern periodic table atomic mass is not a criteria hence option ii) is wrong. Isotopes are given the same position in periodic table hence option iii) is wrong.