Question

Which of the following electronegativity order is incorrect?

• A. Al \( <\) Mg \( <\) B \( <\) N
• B. Al \( <\) Si \( <\) C \( <\) N
• C. Mg \( <\) Be \( <\) B \( <\) N
• D. S \( <\) Cl \( <\) O \( <\) F

Hint:

Electronegativity increases across a period and decreases down a group. Remember to use the Pauling scale for accurate electronegativity comparisons.

Answer 1

The Correct Option is A

The correct order of electronegativity on the Pauling scale is: \[ \text{Li} = 1, \, \text{Be} = 1.5, \, \text{B} = 2, \, \text{C} = 2.5, \, \text{N} = 3, \, \text{O} = 3.5, \, \text{F} = 4.0 \] Thus, the correct order should be: \( \text{Mg} <\text{Al} <\text{B} <\text{N} \), and the incorrect order is \( \boxed{\text{(1)}} \).