Question

On the basis of given part of periodic table;
incorrect statement is :
AB7
C
D
EFGH
(1) Atomic number of C is 15.
(2) Atomic number of E is 51.
(3) Atomic number of G is 52.
(4) Atomic number of H is 54

Answer 1

Answer:

Correct option is D)

Explanation:

Correct option is D)

The statements (i) and (iii) about the Modern periodic table are incorrect.

(i) The elements in the Modern periodic table are arranged on the basis of their increasing atomic number. Thus, N (Z=7) is placed after C (Z=6).

 

(iii) Isotopes are placed in the same group in the periodic table. Thus, Cl−35 and Cl−37 are present in the same group (group 17).