Learning Path
Question & Answer1
Understand Question2
Review Options3
Learn Explanation4
Explore TopicChoose the Best Answer
A
Lithium
B
Beryllium
C
Boron
D
Fluorine
Understanding the Answer
Let's break down why this is correct
Answer
The element with the highest electronegativity in Period 2 is fluorine. Electronegativity measures how strongly an atom attracts shared electrons, and fluorine’s small size and high nuclear charge give it the strongest pull on electrons in a bond. In the periodic table, electronegativity rises across a period, so the last element, fluorine, tops the list. For example, in a water molecule H₂O, oxygen pulls more strongly on the shared electrons than hydrogen, but fluorine would pull even more if it were present, showing its greater electronegativity. Thus, fluorine is the most electronegative element in that period.
Detailed Explanation
Fluorine is the smallest atom in Period 2 and feels a strong pull from its nucleus. Other options are incorrect because Many think lithium is electronegative because it is a metal; Some students assume the heavier the element, the more electronegative it is.
Key Concepts
trends in electronegativity across periods
Topic
Electronegativity
Difficulty
easy level question
Cognitive Level
understand
Practice Similar Questions
Test your understanding with related questions
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Question 4Which of the following elements has the highest electronegativity in Period 2 of the periodic table?
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Question 5Which of the following statements best describes the trend in electronegativity as one moves across a period and down a group in the periodic table?
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