The electronegativity of aluminium is similar to :
Modern periodic law -
The physical and chemical properties of elements are periodic functions of their atomic number.
Regular variation in physical and chemical properties are observed down the group () or along the period (→) in the periodic table.The regular gradation in properties is called periodicity.
we have lernt about electrnegativity
EN of 1.5 which is similar to Be(1.5)