Question

The graph below shows the electronegativities of the elements in the periodic table.

A graph with the horizontal axis labeled period and marked with entries from 0 to 6, and a vertical axis labeled Chi p, with entries 0.5 to 4.5 in increments of 0.5. All data are approximate. Group 17 is represented by an orange line, with coordinates 2, 4; 3, 3.75; 4, 3; 5, 2.75. Group 16, dark red: 2, 3.5; 3, 2.5; 4, 3.5; 5, 2.25. Group 15, brown: 2, 3; 3, 2.25; 4, 2.25; 5, 2.25; 6, 2.25. Group 16, light green: 2, 2.5; 3, 2; 4, 2; 5, 2; 6, 2.5. Group 13, dark green: 2, 2; 3, 1.75; 4, 1.75; 5, 1.75; 6, 1.5. Group 2, blue: 2, 1.5; 3, 1.25; 4, 1; , 5, 1; 6, 1. Group 1, purple: 2, 1; 3, 1; 4, 0.9; 5, 0.9; 6, 0.9.

Which would least strongly attract electrons from other atoms in a compound?
elements of group 1
elements of group 2
elements of group 15
elements of group 17

Answer 1

Elements of group 1.

They have the lowest electronegativities on the graph (≈0.9–1.0), so alkali metals attract electrons least strongly compared with groups 2, 15, or 17.