Which ion is formed when an atom of fluorine (f) gains one electron?

f–1
f–2
f+1
f+2

Option (a) is the correct answer.

Explanation:

When an atom or element gains an electron then the atom acquires a negative charge whereas when an atom or element loses an electron then it acquires a positive charge.

for example, atomic number of fluorine is 9 and when it gains one electron then fluorine atom acquires a negative charge. Hence, neutral atom of fluorine changes into ion.

Thus, we can conclude that ion is formed when an atom of fluorine (F) gains one electron.

120,630,890

step-by-step explanation:

110+10=120,620+10=630,880+10=890

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.