Eight electrons, called an octet, are needed by most atoms in order to be stable.
it can be stable by completing their octet & minimizing their energy
They r noble gases which have stable valance shell and grotp no. 18
The noble gases is the most stable group of elements. They have their outer electron energy levels full, but the number of electrons vary according to which noble gas it is. They are group 18 on the periodic table.
an atom has different energy orbitals: s, p, d, and f. each orbital can hold two electrons. the outside energy or highest energy levels of electrons is called the valence shell or valence electrons. for an atom to be stable it wants the electron configuration for the valence shell to be "s2, p6." to answer your question the outer level of an atom can hold 8 electrons. it is called the valence shell.
Stability isn't determined by the first energy level. The only atom with less than two is hydrogen. It is a very stable atom...reactive in that it will attach to anything, but it will always be hydrogen. The atoms that readily decay (the radioactive ones) all have full first orbitals.
Only 1 electron needed to make H stable.
it is called complete or completely stable
Generally speaking, it would be 8 electrons, but there are many exceptions.
8 are traditionally needed in the valence shell.
it can be stable by completing their octet & minimizing their energy
The most stable atoms/ions have 8 electrons in their outermost shell.
They r noble gases which have stable valance shell and grotp no. 18
The process of losing or gaining electrons to become stable is called ionization.
The noble gases is the most stable group of elements. They have their outer electron energy levels full, but the number of electrons vary according to which noble gas it is. They are group 18 on the periodic table.
They share their valence electrons
Stable.
All the noble gases Helium, Neon, Argon, Krypton, Xenon and Radon have a stable octet of electrons in their outer energy level.