Table of contents

1. The Chemical World9m
- The Scientific Method
  9m
2. Measurement and Problem Solving2h 19m
3. Matter and Energy2h 15m
4. Atoms and Elements2h 33m
5. Molecules and Compounds1h 50m
6. Chemical Composition1h 23m
7. Chemical Reactions1h 43m
8. Quantities in Chemical Reactions1h 8m
9. Electrons in Atoms and the Periodic Table2h 32m
10. Chemical Bonding2h 10m
11 Gases2h 7m
12. Liquids, Solids, and Intermolecular Forces1h 11m
13. Solutions3h 1m
14. Acids and Bases2h 14m
15. Chemical Equilibrium1h 27m
16. Oxidation and Reduction1h 33m
17. Radioactivity and Nuclear Chemistry53m

9. Electrons in Atoms and the Periodic Table

Periodic Trend: Electron Affinity (Simplified)

Introduction to Chemistry

9. Electrons in Atoms and the Periodic Table

Periodic Trend: Electron Affinity (Simplified)

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Multiple Choice

Determine which atom in the following set has the largest electron affinity:N, O, C, B, Ne
a) N b) O c) C d) B e) Ne

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Verified step by step guidance

Understand the concept of electron affinity: Electron affinity is the amount of energy released when an electron is added to a neutral atom in the gaseous state to form a negative ion. Generally, elements with higher electron affinity values are more likely to gain electrons.

Consider the periodic trend: Electron affinity generally increases across a period from left to right in the periodic table. This is because atoms become more electronegative and have a stronger attraction for additional electrons.

Analyze the given elements: The elements provided are N (Nitrogen), O (Oxygen), C (Carbon), B (Boron), and Ne (Neon). These elements are all in the second period of the periodic table.

Evaluate the electron affinity of each element: Neon (Ne) is a noble gas and typically has a very low electron affinity because it has a complete valence shell. Boron (B) and Carbon (C) have lower electron affinities compared to Nitrogen (N) and Oxygen (O) due to their position in the periodic table.

Identify the element with the highest electron affinity: Among the elements N, O, C, B, and Ne, Oxygen (O) has the highest electron affinity. This is because it is more electronegative and is positioned further to the right in the periodic table compared to the other elements listed.