Question

how many electron are present in fluoride ion​

Answer 1

Answer:

learly, one additional electron is all that is required to fill the 2p sublevel, producing the F^- ion. Electron configuration of fluoride ion: 1s2, 2s2 2p6

Explanation:

Answer 2

Answer:

10 electrons

Explanation:

The no.of protons is equal to the number of electrons which is equal to the atomic number of the element.

According to the periodic table, the atomic number of fluorine is 9.

So it seems that the no.of electrons is also 9, but no, the answer is wrong.

If we observe, the question asks us the no.of electrons in the fluorine ion.

Thus, we need to stabilise the element and then see how many electrons are there.

We know that the K shell can hold 2 electrons and l shell can hold 8.

Electronic Configuration of fluorine = 2,7

Thus, when it becomes an ion, it gains an electron to have its configuration as 2,8 which stabilises it.

Thus, the total electrons present in the fluorine ion will be 2+8 = 10 electrons.

Hope you understood!

Please mark as Brainliest :)