Chapter 14, Problem 14STP

Interpretation Introduction

Interpretation:

From, the given information, aufbau principle, needs to be explained.

Concept introduction:

Aufbau principle: According to Aufbau principle, the electron filling in different orbital takes place from lower to higher energy level. That is electron in lowest energy level fills before the highest energy level.

Answer to Problem 14STP

From the given electron configuration for silicon that is 1s2 2s2 2p63s2 3p2, it can be understand that is electron in lowest energy level fills before the highest energy level that is the Aufbau principle, which states that electron filling in different orbital takes place from lower to higher energy level.

Aufbau principle: According to Aufbau principle, the electron filling in different orbital takes place from lower to higher energy level. That is electron in lowest energy level fills before the highest energy level.

From the given electron configuration for silicon that is 1s2 2s2 2p63s2 3p2, it can be understand that is electron in lowest energy level fills before the highest energy level.

Energy of a level can be drived from its n+l value, which is lower for 1+0=1, than 2s which 2+0 and 2p which is 2+1.

That is electron first fill in 1s orbital then is 2s, which is higher in energy than 1s, after that electron fills in 2p which is higher in energy than 2s, then electron fills in 3s, which is higher in energy than 2p, after that electron fills in 3p which is higher in energy than 3s.

Explanation of Solution

Aufbau principle: According to Aufbau principle, the electron filling in different orbital takes place from lower to higher energy level. That is electron in lowest energy level fills before the highest energy level.

From the given electron configuration for silicon that is 1s2 2s2 2p63s2 3p2, it can be understand that is electron in lowest energy level fills before the highest energy level.

Energy of a level can be drived from its n+l value, which is lower for 1+0=1, than 2s which 2+0 and 2p which is 2+1.

That is electron first fill in 1s orbital then is 2s, which is higher in energy than 1s, after that electron fills in 2p which is higher in energy than 2s, then electron fills in 3s, which is higher in energy than 2p, after that electron fills in 3p which is higher in energy than 3s.