3 posts • Page 1 of 1
This is an exception to the rule. Electron affinity is the energy it takes to add an electron to something. There are 2 electrons present in the 2p subshell in carbon's electron configuration, while there are 3 in the 2p shell for nitrogen. Because nitrogen's half filled electron shell is more stable than carbon's shell with only 2 electrons, carbon has a greater affinity for an electron when compared to nitrogen. Therefore, carbon has the higher electron affinity.
Electron affinity increases going across (left to right) the rows and decreases go down columns. Carbon has a higher electron affinity than nitrogen due to its electron configuration. Carbon's electron configuration is 1s^2 2s^2 2p^2 and nitrogen's electron configuration is 12^2 2s^ 2p^3. Having two electrons fill the subshell is more stable than three electrons filling a subshell, so carbon has a higher electron affinity. There is a similar situation to the carbon and nitrogen situation which is silicon and phosphorus.
Who is online
Users browsing this forum: No registered users and 3 guests