QUESTION A:
We must write the electron configuration and the orbital diagram for some elements.
Orbitals are filled with electrons as shown in this graphic:
So, for example, if we wanted to know the electron configuration for sodium (atomic number 11), we start at the top left and follow that arrow to 1s2 (we can only add two electrons to an "s" orbital).(See orbital list in the lower right of the graphic).
Following the next arrow, we fill another "s" orbital 2s2. Following the third arrow down we add 6 electrons to a "p" orbital (2p6). We only have one more electron to fill and we place that in an "s" orbital 3s1.
So, the electron configuration for sodium is:
1s2 2s2 2p6 3s1
ANSWER:
Then, the electron configuration for:
- Ca
Electron configuration
1s2 2s2 2p6 3s2 3p6 4s2
Orbital diagram
