Write the ground state electron configuration of B using the noble-gas shorthand notation. electron configuration:

Question

Write the ground state electron configuration of B using the noble-gas shorthand notation.

electron configuration:

Answer 1

Looking at the periodic table and finding B-boron, you need to locate the next lowest noble gas (last column). This would be [He]. Going to the next line or second period, To ”get to boron” you must “travel” through the first two columns 2s² then to Boron which is the first element of the 2nd “p” sublevel 2p¹. Therefore the electron configuration would be [He]2s²2p¹.