How do you write the noble-gas electron configuration for boron?
The noble gas configuration is
Boron has atomic number 5, which means that it has 5 protons in its atomic nuclei. A neutral atom has the same number of electrons as protons, so a neutral boron atom has 5 electrons.
When writing a noble gas shorthand electron configuration, you start with the noble gas in the previous period, then continue with the electron configuration of the elements in the new period. The symbol for the noble gas is enclosed in brackets. Then the next period's electron configurations are added.
In the case of boron, it is in period 2 on the periodic table, so the noble gas will be helium,