Textbook Question
a. Write an equation for the second electron affinity of chlorine.
b. Would you predict a positive or a negative quantity for this process?
10. Periodic Properties of the Elements
Periodic Trend: Electron Affinity
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Which of the following represents the third electron affinity of Si?
A
B
C
D
Verified step by step guidance1
Understand the concept of electron affinity: Electron affinity is the energy change that occurs when an electron is added to a neutral atom in the gaseous state to form a negative ion.
Identify the process for the third electron affinity: The third electron affinity involves adding a third electron to an already negatively charged ion, specifically from Si²⁻ to Si³⁻.
Analyze the given reactions: Look for the reaction where a single electron is added to Si²⁻ to form Si³⁻.
Select the correct reaction: The correct reaction for the third electron affinity of Si is Si²⁻ + e⁻ → Si³⁻(g).
Verify the charge balance: Ensure that the charges on both sides of the equation are balanced, confirming that the process represents the addition of a third electron.
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