Because they are!
there are grouped in clomesand rows ad groups
based on the number of newtrons if anyone from shire oak school is reading this paige Atkins rote this LOLx.
Omitting the f-block elements, there are 18 groups in the periodic table. Groups 1 and 2 contain s-block elements. Groups 3-12 contain d-block elements and groups 13-18 are made out of p-block elements. The only exception is helium is named under group 18, being a noble gas.
There are 18 groups in the Periodic Table of elements.
they are grouped by there collums
Because all of the elements in the groups or families all have similar qualities. For example, all of the elements in the noble gas family are grouped together because they are stable elements.
Non metals are grouped together because of their similar properties. They are placed in groups-15,16 and 17
Non metals are grouped together because of their similar properties. They are placed in groups-15,16 and 17
The columns are groups or families, and the rows are periods.
Non metals are grouped together because of their similar properties. They are placed in groups-15,16 and 17
Non metals are grouped together because of their similar properties. They are placed in groups-15,16 and 17
Groups are vertical and contain chemical elements with similar properties; periods are horizontal.