Q. Which of the following statements are NOT true about the periodic table? A. The properties of elements are function of atomic weights. B. The properties of elements are function of atomic numbers. C. Elements having similar outer electronic configurations are arranged in same period. D. An element's location reflects the quantum numbers of the last filled orbital. E. The number of elements in a period is same as the number of atomic orbitals available in energy level that is being filled. Choose the correct answer from the options given below:
A) A, C and E Only
B) A and E Only
C) B, C and E Only
D) D and E Only
Explanation
[Solution by Dr. Abubacker] A is false (the modern law uses atomic number). C is false (similar outer configurations fall in the same group, not period). E is false (the number of elements in a period is twice the number of orbitals available, since each holds 2 electrons). B and D are true. So A, C and E are not true. Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.