Quick Answer: The Silicon Electronic Configuration Model shows how the 14 electrons of a neutral silicon atom are arranged 2,8,4 across three shells, leaving four valence electrons in the outer shell.
Last updated: October 2026
Key Features
Atomic number 14, with 14 protons and 14 electrons in a neutral atom
The three shells hold 2, 8 and 4 electrons
Four valence electrons in the third, outermost shell
Links shell notation to the configuration 1s² 2s² 2p⁶ 3s² 3p²
Technical Specifications
Specification
Value
Element represented
Silicon, symbol Si
Atomic number
14
Electron shell arrangement
2, 8, 4
Valence electrons
4
Electronic configuration
1s² 2s² 2p⁶ 3s² 3p²
About This Product
Students work through the shells in turn, from the 2 electrons nearest the nucleus to the 8 in the second shell and the 4 on the outside. The model suits secondary-level lessons on electronic configuration, valency and periodic classification, and prepares learners for later discussion of chemical bonding and element properties.
Frequently Asked Questions
Q1. Why does silicon have four valence electrons? Its 14 electrons fill the first shell with 2 and the second with 8, leaving 4 in the third, outermost shell. Those outer electrons are its valence electrons.
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