Learning Path
Question & Answer1
Understand Question2
Review Options3
Learn Explanation4
Explore TopicChoose the Best Answer
A
Electronegativity
B
Atomic radius
C
Ionization energy
D
Metallic character
E
Electron affinity
Understanding the Answer
Let's break down why this is correct
Answer
Across a period, the effective nuclear charge felt by electrons rises because protons outnumber shielding electrons, so the nucleus pulls harder. This stronger pull raises the electronegativity, making atoms more eager to attract electrons. As a result, ionization energy climbs because more energy is needed to remove an electron. Electron affinity also becomes more negative, meaning atoms more readily accept an electron. These trends all increase from left to right on a period.
Detailed Explanation
Electronegativity is how strongly an atom pulls in electrons. Other options are incorrect because Many think the distance between the nucleus and the outer electrons grows when moving right, but it actually shrinks; Some believe metallic character becomes stronger across a period, but the opposite happens.
Key Concepts
Periodic trends
Atomic structure
Chemical reactivity
Topic
Periodic Properties
Difficulty
easy level question
Cognitive Level
understand
Practice Similar Questions
Test your understanding with related questions
1
Question 1Which of the following statements correctly describes a trend in the periodic table related to the atomic number, atomic radius, and noble gases?
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Question 2Which 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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Question 3Why does the atomic radius generally decrease as you move from left to right across a period in the periodic table?
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Question 4Arrange the following periodic properties in the order of increasing atomic size as you move across a period in the Periodic Table: A. Electronegativity B. Ionization Energy C. Atomic Radius D. Electron Affinity
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Question 5Which of the following statements best describes how electronegativity changes across a period in the Periodic Table?
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Question 6Which 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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Question 7Why does the atomic radius generally decrease as you move from left to right across a period in the periodic table?
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8
Question 8Arrange the following periodic properties in the order of increasing atomic size as you move across a period in the Periodic Table: A. Electronegativity B. Ionization Energy C. Atomic Radius D. Electron Affinity
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Question 9Which of the following statements best describes how electronegativity changes across a period in the Periodic Table?
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Question 10Which of the following properties generally increase as you move from left to right across a period in the Periodic Table? (Select all that apply)
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