Quick Answer: The Structure of Phosphorus Model shows the electron arrangement of a neutral phosphorus atom, with 15 electrons spread 2,8,5 over three shells and five valence electrons in the outer shell.
Last updated: October 2026
Key Features
15 protons and 15 electrons in a neutral atom
Electrons distributed across three principal shells as 2, 8 and 5
Five valence electrons in the outermost shell
Explains the element's position in period 3 and group 15
Technical Specifications
Specification
Value
Element represented
Phosphorus, symbol P
Atomic number
15
Electron shell arrangement
2, 8, 5
Valence electrons
5
Ground-state configuration
1s² 2s² 2p⁶ 3s² 3p³
Periodic table position
Period 3, Group 15
About This Product
Working outwards from the nucleus, students count 2 electrons in the first shell, 8 in the second and the 5 that make up the outer shell. The model connects shell notation with the full ground-state configuration and with periodic classification, and leads on to later discussion of ions, valency and chemical bonding. Besides buyers across India, the Structure of Phosphorus Model can be exported to institutions in Antigua and Barbuda, Bolivia, Benin, Bulgaria, Mozambique and Kiribati.
Frequently Asked Questions
Q1. How does the model explain where phosphorus sits in the periodic table? Its electrons occupy three shells, which places it in period 3, and its five outer-shell electrons match its position in group 15.
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