elements in the same row in the periodic table
elements in the same column in the periodic table
also referred to as a family
properties of elements gradually changing across this category in a predictable way
elements in this category having similar chemical and physical properties
1 answer
Elements in the same row in the periodic table are referred to as periods. Elements in the same column in the periodic table are referred to as groups or families. Properties of elements gradually changing across a period in a predictable way is called periodicity. Elements in the same group or family have similar chemical and physical properties.