The outer shell of a plane can be called the skin. The smoother the skin the faster the plane passes through the air.
The outer shell is called the valence shell
The key to "happiness" for an atom is a full outer electron shell. (The outer electron shell is called the valence shell.) There are two conditions that cause a shell not to be full. Either it has only an electron or two (or three) in the outer electron shell or it's short an electron or two in that outer shell. The direct answer to the question is that if an element is chemically active, its outer electron shell is incomplete or is not full.
it is called a rind
chlorine has 6 electrons in the outer shell. although these have a special name, they are called valance electrons.
The number of electrons in the outer shell are called Valence electrons and are important in determining how the atom reacts chemically with other atoms.
Valence shell
An egg with an outer hard shell is called the cuticle or bloom. It helps keep out bacteria and dust.
valence shell
It is a shell, as in a cockle shell or oyster shell.
The outer shell is called the valence shell
the shell
Valence shell and Ultimate Shell
The electrons located in the outer shell are called "valence electrons".
The key to "happiness" for an atom is a full outer electron shell. (The outer electron shell is called the valence shell.) There are two conditions that cause a shell not to be full. Either it has only an electron or two (or three) in the outer electron shell or it's short an electron or two in that outer shell. The direct answer to the question is that if an element is chemically active, its outer electron shell is incomplete or is not full.
alkali metals
Valence Electrons
The 'rocket body' .