Wan't to know if electron and anti electron is created inside the atom

electron exist with companion to it's anti electron. How about other virtual particle like gluon does it exist with companion to his antiparticle

No. Electrons aren't 'created' at all, they just are. If a neutron decays an electron results,(Beta decay) but only a free neutron not in a nucleus. In Quantum Theory virtually all particles have mirror anti-particles, however gluons do not. Gluons make up quarks, which have antiquarks, but both are made of gluons. Gluons don't carry charge, but a quality called 'color' and while the 'anti-color' property exists, it can't be resolved in individual gluons. They're in a sense, both.


*Mark S* You are mistaken. An anti-electron is called a Positron and does exist. As do anti-protons, anti-neutrons, and many other particles.

The anti-electron, as you call it, is the PROTON. There is an equal number of electrons and protons in any atom that is not a ion.

Since other particles do not carry a charge, they do not require an opposite partner in order for the atom to remain neutral.