Question

Which statement is not true about the periodic table?A.The groups of the periodic table can be numbered in two different ways.B.The modern periodic table is organized by atomic number.C.Elements in the same column of the periodic table have the same number of electron shells.D.On the periodic table, one box represents one element.

Answer 1

C. Elements in the same column of the periodic table have the same number of electron shells.

Step-by-step explanation

All the options given are true about the periodic table EXCEPT

C. Elements in the same column of the periodic table have the same number of electron shells.

The reason is elements of the same period have the same number of electron shells. As the elements in a group have the same number of electrons in the outermost shell and valency depends upon the valence electrons in an atom. Therefore all the elements of a group have the same valency or valence electron.