At a ground state, argon has three energy levels. For future reference, just count the number of horizontal rows (also named periods) an element is from the top of the Periodic Table.
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Argon has multiple energy levels corresponding to different electronic configurations. The electron configuration of argon is [Ne] 3s^2 3p^6. This means argon has a total of 18 electrons distributed across different energy levels.
Argon has 2 electrons in the first energy level, 8 electrons in the second energy level, and 8 electrons in the third energy level.
The Bohr model for argon is based on the concept that electrons orbit the nucleus in discrete energy levels. In argon, with 18 electrons, the electrons fill the available energy levels starting from the lowest energy level first according to the Aufbau principle. The Bohr model helps in understanding the arrangement of electrons in an atom and predicting its chemical behavior.
Argon ionization energy is the amount of energy required to remove an electron from a neutral argon atom to produce a positively charged ion. In the case of argon, this energy is relatively high due to its stable electron configuration.
An atom of argon consists of a nucleus composed of 18 protons and usually 22 neutrons surrounded by 18 electrons in energy levels. The nucleus is very small compared to the electron cloud, which extends far out around the nucleus. The overall structure is spherical and symmetrical due to the arrangement of the electrons in their respective energy levels.