IB Chemistry Topic S1.3.3 Main Energy Levels Revision Notes (SL/HL)

IB Chemistry Topic S1.3.3 Main Energy Levels Revision Notes (SL/HL) | RevisionDojo

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Principal Quantum Number and Its Connection to the Periodic Table

Principal Quantum Number (n)

Definition

Principal quantum number

The principal quantum number (n) is a fundamental concept in quantum mechanics that describes the main energy levels, or shells, of an atom.

These energy levels are regions around the nucleus where electrons are most likely to be found.
The value of $n$ is always a positive integer: $n = 1, 2, 3, \dots$

Key Features of the Principal Quantum Number:

Energy Levels:
1. The principal quantum number determines the energy of an electron.
2. Higher values of $n$ correspond to higher energy levels, which are farther from the nucleus.
Electron Capacity:
1. Each energy level can hold a maximum number of electrons, given by the formula:
  $$\text{Maximum electrons in an energy level} = 2n^2$$

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Principal Quantum Number and Its Connection to the Periodic Table

Principal Quantum Number (n)

Definition

Principal quantum number

The principal quantum number (n) is a fundamental concept in quantum mechanics that describes the main energy levels, or shells, of an atom.

These energy levels are regions around the nucleus where electrons are most likely to be found.
The value of $n$ is always a positive integer: $n = 1, 2, 3, \dots$

Key Features of the Principal Quantum Number:

Energy Levels:
1. The principal quantum number determines the energy of an electron.
2. Higher values of $n$ correspond to higher energy levels, which are farther from the nucleus.
Electron Capacity:
1. Each energy level can hold a maximum number of electrons, given by the formula:
  $$\text{Maximum electrons in an energy level} = 2n^2$$

Definition

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(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

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Note

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Excepteur sint occaecat cupidatat non proident

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
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Structure 1. Models of the particulate nature of matter5 subtopics

Structure 2. Models of bonding and structure4 subtopics

Structure 3. Classification of matter2 subtopics

Reactivity 1. What drives chemical reactions?4 subtopics

Reactivity 2. How much, how fast and how far?3 subtopics

Reactivity 3. What are the mechanisms of chemical change?4 subtopics

IB Chemistry S1.3.3 Main Energy Levels Notes

Structure 1. Models of the particulate nature of matter5 subtopics

Structure 2. Models of bonding and structure4 subtopics

Structure 3. Classification of matter2 subtopics

Reactivity 1. What drives chemical reactions?4 subtopics

Reactivity 2. How much, how fast and how far?3 subtopics

Reactivity 3. What are the mechanisms of chemical change?4 subtopics

Principal Quantum Number and Its Connection to the Periodic Table

Principal Quantum Number (n)

Key Features of the Principal Quantum Number:

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Principal Quantum Number and Its Connection to the Periodic Table

Principal Quantum Number (n)

Key Features of the Principal Quantum Number:

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