Question

Question 4
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


(a) (i) only
(b) (i), (ii) and (iii)
(c) (i), (ii) and (iv)
(d) (iv) only

Answer 1

Option (a) is the correct answer.
The periodic table is a tabular arrangement of elements, arranged on the basis of increasing atomic numbers (number of protons in the nucleus), electronic configurations and recurring chemical properties. The table also shows four rectangular blocks: s, p, d and f block. In general, within one row (period) the metals are placed on the left-hand side and non-metals on the right-hand side.