Question

Draw the electronic configuration of Beryllium (Atomic number - 4) and Boron (Atomic number - 5).​

Answer 1

Answer:

Beryllium is the fourth element with a total of 4 electrons. In writing the electron configuration for beryllium the first two electrons will go in the 1s orbital. Since 1s can only hold two electrons the remaining 2 electrons for Be go in the 2s orbital. Therefore the Be electron configuration will be 1s22s2.

Answer 2

Answer:

electronic configuration