Atoms do not actually have desires as such, although the metaphor can be useful. Atoms are more stable when they have a full outer electron shell. The smaller atoms, hydrogen, helium, lithium, and beryllium, can obtain a full outer shell with only two electrons in it. The heavier atoms require 8 electrons to have a full outer shell. That is known as the octet rule (an octet is a set of eight).
3 total
Helium has two valence electrons
Helium has 2 valence electrons.
8
Each atom has a unique combination of protons, neutrons, and electrons.
A Krypton atom has 36 protons and 36 electrons each.
each of atoms have electrons that equql to atomic number of that of atoms
the cat
Nitrogen has five valence electrons.
Atomic number= No. of electrons in the atom. Atomic no. of selenium=34. Therefore,selenium has 34 electrons in each of its atom.
20 of each
76 of each.
about 7
3 total
There are 16 electrons in an oxygen molecule as each oxygen atom has 8 electrons.
well it can have 3 or more
It is different for each element. In hydrogen, there is one.