Electron Configurations

Front

What are Alkali Metals?

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Alkali Metals are the elements found in Group 1 of the periodic table, characterized by having one electron in their outermost shell. They are highly reactive and include lithium (Li), sodium (Na), and potassium (K).

Front

What is Hund's Rule?

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Hund's Rule states that electrons will fill degenerate orbitals (orbitals of the same energy) singly before pairing up. This minimizes electron-electron repulsion and stabilizes the atom.

Front

What is the Pauli Exclusion Principle?

Back

The Pauli Exclusion Principle states that no two electrons in an atom can have the same set of four quantum numbers. This means that an orbital can hold a maximum of two electrons with opposite spins.

Front

What is the maximum number of electrons in an s orbital?

Back

An s orbital can hold a maximum of 2 electrons.

Front

What is the Aufbau Principle?

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The Aufbau Principle states that electrons occupy the lowest energy orbitals first before filling higher energy levels.

Front

What is an orbital diagram?

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An orbital diagram is a visual representation of the electron configuration of an atom, showing the distribution of electrons in various orbitals.

Front

What is the electron configuration of Neon?

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The electron configuration of Neon (Ne) is 1s² 2s² 2p⁶.

Front

What is the significance of the periodic table in electron configurations?

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The periodic table organizes elements based on their atomic number and electron configurations, helping predict chemical properties and reactivity.

Front

What are the main groups of the periodic table?

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The main groups include Alkali Metals, Alkaline Earth Metals, Transition Metals, Halogens, and Noble Gases.

Front

What is the difference between a core electron and a valence electron?

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Core electrons are those in the inner shells of an atom, while valence electrons are in the outermost shell and are involved in chemical bonding.