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Mendeleev's periodic table -
Mendeleev arranged the 63 discovered elements in the periodic table in to 7 horizontal rows known as periods and vertical column known as groups numbered 1 to 8.
-
Electronegativity and atomic radius -
The attraction between the outer electrons and the nucleus increases as the atomic radius decreases in a period.
- wherein
As we know
that as we go down the group electronegativity decreases and atomic radius increases as we go down the group
Option 1)
atomic radius and electronegativity
Option 2)electron gain enthalpy and electronegativity
Option 3)electronegativity and atomic radius
Option 4)electronegativity and electron gain enthalpy