The arrangement and behavior of electrons in an atom play a crucial role in determining its chemical properties. Electrons are organized into shells, each capable of holding a specific number of electrons, with the first shell holding up to two, the second up to eight, and the third up to eighteen.
The electrons in the outermost shell of an atom are called valence electrons.
Elements with the same number of valence electron have the same chemical properties.
have great significance in determining the chemical properties of an atom.
The electrons in the outermost shell of an atom
The arrangement of electrons
Finding the electron arrangement of an atom
The shell of electrons
Electron Configuration in Atom
However, with the third shell, when eight electrons are present, extra stability is gained. The additional electrons go into the fourth shell before the third shell is completely filled.
Every single shell is capable of holding up to certain amount of electrons
The third shell can hold up to eighteen electrons.
The second shell can hold up to eight electrons. This is called an octet.
The first shell can hold up to two electrons. This is called a duplet.
These orbits with definite energy level are known as the shell.
Electrons occupy orbits with definite energy level of an atom, as suggested by Neils Bohr.
