valence electrons and their nature orbit and configuraion is shown
valence electrons orbit the nucleus in an atomic model
a closeup of chemistry elements depicts how protons and electrons are organized within the molecule
a woman talks about valence electrons in the valence orbit
a computer generated graphic is explaining how valence electrons orbit a nucleus in an atom
clip showing and explaining the construction of atom of an element
there is a diagram of an atom and a woman describing the electrons inside the atom then a diagram of a periodic table shows up describing argon as an octet configuration
a woman is explain about a electron with a diagram
electrons are being shown orbiting a nucleus the table of elements is shown
a woman is talking about electrons in the outermost  or valance orbit of a cell while a cell is being shown
an animated illustration about electrons which are present in earth
a computerized  diagram showing the different layers of electrons
electrons spin around a sphere and a woman talks about electrons
a yellow element with green electrons spinning around a nuculas a peridoic table of elements
person is presenting his project about valence orbits
instructional video about valence electrons and valence orbit
the valence of the electrons and octet configuration are illustrated with pictures and graphs
a lady with very cute voice is explaining about elements
science video explaining elements and the breakdown/make up of atoms
some green balls are rotating around other balls