Kinetic Theory of Matter

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Kinetic Theory of Matter

Valence Electrons

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.