Question

question 19 of 25. which statement is not true about the periodic table? a. the modern periodic table is organized by atomic number. b. elements in the same column of the periodic table have the same number of electron shells. c. on the periodic table, one box represents one element. d. the groups of the periodic table can be numbered in two different ways.

Explanation:

The modern periodic table is organized by atomic number (A is true). Elements in the same column (group) have the same valence electrons, not electron shells (B is false). Each box represents one element (C is true). Groups can be numbered in two ways (1-18 or 1-8 with A/B, D is true).

Answer:

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