Why are the elements on the periodic table columns and rows?

Answer 1

they are groups

1. Alkali metal

2. Alkaline earth metal

3. Chemical element

4. Chemical element

5. Chemical element

6. Transition metals

7. Transition metals

8. Transition metals

9. D-block Transition metals

10. Transition metals

11. Transition metals

12. D-block

13. Boron group

14. Carbon group

15. Nitrogen group

16. Chalcogen

17. Halogen

18. Noble gas

Answer 2

The elements are put in order by atomic number (the number of protons in the nucleus) from least to greatest, and follow an observed pattern in atomic properties. As you follow a row (period) from right to left, the atomic properties slowly change from that of an Alkali Metal to that of a Noble Gas. This pattern is what makes up the periods on the Periodic Table. However, as we move along, there are sudden changes in atomic properties, from a Noble gas back to that of an Alkali Metal at the beginning of the period, and then the pattern starts over, slowly moving back towards the noble gasses at the end of each period. So, the rows are the pattern, shifting from Alkali to Noble, and each column is the group of all elements with certain properties (such as all Alkalis on the left, or all Noble gasses on the far right).

Answer 3

The elements on the periodic table are organized into columns and rows based on their properties and atomic structures. Columns are called groups or families and indicate elements with similar chemical properties. Rows are called periods and represent the increasing number of protons in the elements' nuclei.

Answer 4

The columns of the periodic table bring together elements with similar properties.

Answer 5

Only in a two dimensional matrix (table) it is possible to show the periodicity of one 'variable' (chemical property / reactivity) of all elements.