Question

Electronic configuration of four elements are given in the table. Arrange these elements in the increasing order of their electronegativity. Give reason.​

Answer 1

The increasing order of electronegativity is K < Na < Al < Si

Explanation:

• The trend of electronegativity decreases in a group from to to bottom.
• Similarly, the electronegativity trend increases in a period as we move from left to right in the periodic table.
• Sodium and potassium are present in group 1 while Aluminium and silicon are present in period 3.
• Electronegativity values for Na, K, Al, Si are 0.93, 0.82 , 1.61, 1.9
• The increasing order of electronegativity is K < Na < Al < Si