Fluorine is a chemical element with the atomic number 9, which means it has 9 protons in its nucleus. In a neutral atom, the number of electrons is also equal to the number of protons, so Fluorine has 9 electrons. Now let's determine its electronic configuration.

Electronic Configuration of Fluorine:
The electronic configuration of an atom describes the arrangement of its electrons in different energy levels or shells. Electrons fill up the shells in a specific order, following a set of rules known as the Aufbau principle, Pauli exclusion principle, and Hund's rule.

1. Aufbau Principle:
According to the Aufbau principle, electrons occupy the lowest energy level or shell available before moving to higher energy levels. The energy levels are labeled as 1s, 2s, 2p, 3s, 3p, and so on.

2. Pauli Exclusion Principle:
The Pauli exclusion principle states that each orbital can accommodate a maximum of two electrons, and they must have opposite spins (one electron with spin up and the other with spin down).

3. Hund's Rule:
Hund's rule states that when filling orbitals of the same energy level, electrons will first occupy each orbital singly with parallel spins before pairing up.

Now let's apply these rules to determine the electronic configuration of Fluorine.

- The first shell (energy level 1) can hold a maximum of 2 electrons. So, the 1s orbital will be filled with 2 electrons.

- The second shell (energy level 2) can hold a maximum of 8 electrons. The 2s orbital will be filled with 2 electrons, and the remaining 6 electrons will go to the 2p orbitals.

- The 2p orbitals (2px, 2py, and 2pz) will each accommodate one electron with parallel spins before pairing up.

So, the electronic configuration of Fluorine is:

1s^2 2s^2 2p^5

This configuration indicates that Fluorine has 2 electrons in the 1s orbital, 2 electrons in the 2s orbital, and 5 electrons in the 2p orbitals. Therefore, the correct answer is option C: 2, 7.

Option c is correct