What do elements in a group have in common?

1 Answer
Jul 6, 2017

elements in a group have a similar electron configuration which differs in the size of the outer shell.


Take the elements of group I A all of them have a single s electron on the outermost shell

# Li = 2s^1#
#Na = 3s^1#
#K = 4s^1#

The similar outer shell electron configuration results in similar chemical properties and reactions.