Electronic Configuration With Atomic Diagram. The electronic configuration of an atom can be predicted from its atomic number. In the modern periodic table elements are in order of.
Following hydrogen is the noble gas helium which has an atomic number of 2. Sodium atoms have 11 protons and so 11 electrons. An electron configuration diagram is a model that depicts the position of electrons as they orbit the nucleus of an atom.
Actual electron configurations total electrons atomic number fill energy levels with electrons until you run out a superscript states how many electrons are in each level hydrogen 1s1 1 electron total helium 1s2 2 electrons total lithium 1s22s1 3 electrons total beryllium 1s22s2 4 electrons total.
An electron configuration diagram is a model that depicts the position of electrons as they orbit the nucleus of an atom. It states that in ground state the electrons occupy the atomic orbitals in their order of increasing energies which is given by nl rule. 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 6. Electrons are represented by dots or crosses and are positioned in energy levels or shells around the central nucleus.