Which element has the highest electronegativity?
Correct answer: C. Fluorine
- A. Oxygen
- B. Chlorine
- C. Fluorine
- D. Nitrogen
Explanation
Fluorine is the most electronegative element on the Pauling scale at 4.0, because it is small and has a high effective nuclear charge, so it attracts bonding electrons more strongly than any other atom. Oxygen at 3.5 is second and chlorine and nitrogen follow at 3.0. Electronegativity increases across a period and decreases down a group, so the maximum lies at the top right, excluding the noble gases.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Periodic Properties and Trends
Periodic properties arise from electron configuration and effective nuclear charge, producing trends in atomic and ionic radius, ionization energy, electron affinity, electronegativity, metallic character and reactivity. Comparisons run across periods and down groups, with attention to common exceptions. The topic also relates these trends to the behavior of s-block and p-block elements.
Practise s-Block and p-Block Elements
1,359 free s-Block and p-Block Elements MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Periodic Properties and Trends questions
The first ionisation energy is the energy required to
Across a period from left to right, the atomic radius of the elements generally
Across a period, the first ionisation energy generally
The oxides of the elements across period 3, from sodium to sulphur, change from
Lithium shows a diagonal relationship with
The element with smallest value of ionization energy is