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Which of the following elements has the highest electronegativity?
Fluorine
Oxygen
Nitrogen
Chlorine
Fluorine
Fluorine has the highest electronegativity of all elements on the Pauling scale with a value of 3.98, making it extremely reactive and prone to attracting shared electron pairs in chemical bonds. Electronegativity generally increases from left to right across a period and decreases from top to bottom down a group in the periodic table.
Fluorine has the highest electronegativity of all elements on the Pauling scale with a value of 3.98, making it extremely reactive and prone to attracting shared electron pairs in chemical bonds. Electronegativity generally increases from left to right across a period and decreases from top to bottom down a group in the periodic table.
The modern periodic table, arranged by atomic numbers following Henry Moseley's law, establishes the foundational framework for analyzing periodic trends such as electronegativity, atomic radius, and ionization energy.
Fluorine holds the maximum Pauling electronegativity value of 3.98 in the periodic table.
Oxygen ranks second among elements with an electronegativity value of 3.44.
Electronegativity increases across a period due to increasing nuclear charge and decreases down a group due to increased atomic radius.
Option A is correct because fluorine's small atomic radius and high effective nuclear charge give it the strongest pull on bonding electrons.
Option B (Oxygen) is the second most electronegative element but is lower than fluorine.
Option D (Chlorine) is a halogen like fluorine but has a lower electronegativity value of 3.16 due to its larger atomic size.
A is correct тАФ Fluorine possesses the highest electronegativity value among all known elements.
For railway and technical exams, frequently compare electronegativity trends with ionization energy and electron affinity, as all three properties generally increase towards the top-right corner of the periodic table.