Element Diagram Boron. Since 1s can only hold two electrons the next 2 electrons for b goes in the 2s orbital. 1s2 2s2 2p1 boron 1s2 2s2 2p6 3s2 3p6 4s2 3d1.
Draw dot diagrams for elements. It constitutes about 0 001 percent by weight of earth s crust. The nuance is that the level pi lies below the level sigma2.
For example a bohr diagram of the element boron shows five protons and five electrons.
Boron is the fifth element with a total of 5 electrons. It constitutes about 0 001 percent by weight of earth s crust. Is 2s2p 3s 3p3d 4s. An atom s first energy level holds up to two electrons under the bohr model represented by two dots.
