In which row are the chemical elements in the order of decreasing their electronegativity? 1) Li → Be → B

In which row are the chemical elements in the order of decreasing their electronegativity? 1) Li → Be → B 2) P → S → Cl 3) Mg → Ca → Sr 4) Sb → As → P

Determine electronegativity according to the periodic table:
Electronegativity in a group increases from left to right
Electronegativity in the period increases from bottom to top
1) increases
2) increases
3) decreases, correct answer
4) increases
Answer: 3



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