Question

f-
express your answer in complete form, in order of increasing orbital. for example,
1s²2s² would be entered as 1s^22s^2.

Explanation:

Step1: Determine the atomic number of F

The atomic number of F (fluorine) is 9.

Step2: Consider the electron gain in \(F^-\)

\(F^-\) has one extra electron compared to F. So it has \(9 + 1=10\) electrons.

Step3: Write the electron - configuration

Using the Aufbau principle (filling orbitals in order of increasing energy: \(1s<2s < 2p\)), for 10 electrons, the electron - configuration is \(1s^22s^22p^6\).

Answer:

\(1s^22s^22p^6\)