Ch.8 - Periodic Properties of the ElementsWorksheetSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Orbital Diagrams

See all sections
Sections
Electron Configuration
Paramagnetic and Diamagnetic
Effective Nuclear Charge
The Spin Quantum Number
Orbital Shapes
Periodic Trends: Atomic Radius
Periodic Trends: Ionic Radius
Periodic Trends: Ionization Energy
Periodic Trends: Electron Affinity
Additional Practice
Orbital Diagrams
Coulomb's Law
Quantum Numbers
Periodic Trends
Periodic Trends: Metallic Character
Additional Guides
Atomic Radius
Ionization Energy
Additional Practice

Solution: Four possible electron configurations for a nitrogen atom are shown below, but only one schematic represents the correct configuration for a nitrogen atom in its ground state. Which one is the correct

Problem

Four possible electron configurations for a nitrogen atom are shown below, but only one schematic represents the correct configuration for a nitrogen atom in its ground state. Which one is the correct electron configuration?

4 different electron configurations are shown, each with 7 electrons. Configuration A has 1 up electron and 1 down electron in its 1s orbital, and the same in its 2s orbital. Its 2p orbital has 1 up and 1 down electron in its first orbital, 1 up electron in its second, and an empty 3rd orbital. Configuration B contains 1s and 2s orbitals identical to those in configuration A. Its 2p- orbital has 3 up electrons, 1 in each orbital. Configuration C contains 1s and 2s orbitals identical to those in configurations A and B. Its 2p-orbital has 2 up electrons in the first orbital, 1 up electron in the second orbital, and an empty 3rd orbital. Configuration D also has full 1s and 2s orbitals, but its p-orbital has 1 up electron in each of the 1st 2 orbitals, and 1 down electron in the 3rd.

Which configurations violate Hunds rule?

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