Between electrons and the atomic nucleus a repulsion exist.
Two (2) electrons can be held in the first orbit.
Atoms do not leave electrons! Electrons leave from the outer orbit of an atom and join the outermost orbit of another atom when there is a chemical reaction involved between the two atoms .
do electrons orbit the nucleus like plantes orbit the sun?
2 electrons maximum. 1s2
Covalent bonds are created when atoms share electrons.
Atoms in a compound are held together by chemical bonds, which are formed when atoms share or transfer electrons to achieve a stable configuration. These bonds can be covalent, where atoms share electrons, or ionic, where electrons are transferred between atoms.
Atoms in a covalent bond are held together by the sharing of electrons between the atoms. This sharing of electrons creates a stable electron configuration for both atoms involved, allowing them to be held together in a mutually beneficial way.
Atoms are composed of three subatomic particles: protons, neutrons, and electrons. Protons and neutrons are made up of smaller particles called quarks, which are held together by strong nuclear forces. Electrons are elementary particles that orbit the nucleus of an atom.
The maximum number of electrons that can be held in the third orbit of an atom is 18. This is based on the formula 2n^2, where n is the principal quantum number of the orbit. For the third orbit (n=3), the maximum number of electrons is 2 x 3^2 = 18.
6
cloudsAn atom is made of a core + electrons .The core is made of positive charges held together by neutral charges. The electrons, negative charges, orbit round it.If there is 5 positive charges in the core, 5 electrons would orbit around it. Otherwise it's not called an atom anymore, but a ion.
insulators do not have free electrons