Question

question 1 (10 points)
arrange aluminum, nitrogen, phosphorus, and indium in order of increasing
electronegativity.
a) in < al < p < n
b) al < in < n < p
c) in < p < al < n
d) al < in < p < n
e) none of these orders is correct.

Explanation:

Step1: Recall the trend of electronegativity

Electronegativity increases across a period from left to right and decreases down a group.

Step2: Analyze the positions of the elements

• Aluminum (Al) is in period 3, group 13.
• Phosphorus (P) is in period 3, group 15.
• Nitrogen (N) is in period 2, group 15.
• Indium (In) is in period 5, group 13.
• Since In is below Al in the same group (group 13), In has lower electronegativity than Al.
• Among Al and P (same period), P has higher electronegativity than Al.
• Among P and N (same group), N has higher electronegativity than P (as electronegativity decreases down a group).

So the order of increasing electronegativity is \(In < Al < P < N\)

Answer:

A. \(In < Al < P < N\)