.

Similarly, what is the outer shell?

The outermost shell of an atom is called valence shell. The electrons in this shell are called valence electrons. It is the electrons in the valence shell, which take part in chemical reactions and determine the chemical properties of the atom. It is called the Valence shell.

Beside above, what do electron shells represent? An electron shell is the outside part of an atom around the atomic nucleus. It is where the electrons are, and is a group of atomic orbitals with the same value of the principal quantum number n.

Also know, how many electrons does outer shell have?

Each shell can contain only a fixed number of electrons: The first shell can hold up to two electrons, the second shell can hold up to eight (2 + 6) electrons, the third shell can hold up to 18 (2 + 6 + 10) and so on. The general formula is that the nth shell can in principle hold up to 2(n²) electrons.

Why are there only 8 electrons in the outer shell?

The eight- electrons stability of an atom is stemmed from the stability of the noble gases or the elder name inert gases, which had long been known as unreactive or noble. However, this rule is justified for elements of second row in the periodic table, which their outermost- shell capacity is 8 electrons.