this is because a fluorine ion is one electron short of a full valence shell,which makes getting another electron to fill the shell very favourable,filling the shell makes the molecule much more stable
loj;k;lj'uoiyuygb If an atom has only one or a few electrons in its valence shell, it tends to lose these electrons so that the next shell inward, which is already filled, becomes the outermost occupied shell.
The halogen fluorine has 7 valence electrons in its outershell and by gaining an extra electron would be able to complete the shell. This is thermodynamically favourable and hence fluorine will readily accept an extra electron.
When a fluorine atom gains an electron, it obtains a noble gas electron configuration, which makes it stable. The electron configuration of a neutral fluorine atom is 1s22s22p5. The electron configuration of a fluorine -1 ion is 1s22s2sp6, which is the same as the noble gas neon.
they don't- they tend to gain an electron.
it already has 7 out of 8 electrons in its valence shell - hence a fluorine atom needs only 1 electron for 8/8
d orbital is not present in valence shell of fluorine and hence excitation to higher state is absent consequently fluorine has -1 oxidation state only.
Fluorine is the most electronegative chemical element.
Even though Fluorine has the highest electronegativity among all the elements and it should have the highest electron gain enthalpy among all the halogens but this is an exception and chlorine has higher electron gain enthalpy than Fluorine. The reason for this is that the size of Fluorine atom is very small and hence there is very high inter-electronic repulsion among the electrons of fluorine. This makes incoming of another electron not very favourable. Even though fluorine has large negative electron gain enthalpy but for chlorine its even more negative.
Sodium loses its one valence electron to become Na+
Potassium only needs to lose on electron (gain a positive charge) to have the same electron structure as Argon and thus very stable. Similarly, fluorine only needs to gain one electron (become negatively charged) to gain the very stable Neon structure.
flourine must gain one electron
A neutral atom is uncharged. An ion is an atom with a charge. For an atom to become charged it must lose or gain one [or more] electrons. A substance can appear in its ionic form only after it is dissolved in water. This is called an aqueous solution. For example, LiF = Li+1(aq) and F-1(aq). A neutral fluorine atom contains {10 neutrons & } 9 protons and 9 electrons. It shares the Group VII A Periodic Classification , the Halogens , with chlorine, bromine, iodine and 3 others. This Group forms negative ions. Its members are (in terms of chemical bonding) HAPPIEST when they accept an electron, seeking to create a [shared pairing of electrons] chemical bond and become neutrally bound to an atom that is (in water) a positive ion. The most common occurrence of Halogen (-ve 1) chemical bonding is with the Group I A elements , the Alkali metals (+ve 1) , lithium, sodium and potassium being the first three of the Group. Any combination of elements of these two Groups are commonly known as the salts. So the fluorine atom in question, as a solid, shares its crystalline form with either a Group I A or Group II A atom. The first thing that happens to the atom after it is mixed with water is that it becomes an ion. After this, Fluorine -1 (aq) is available to accept one electron from any atom that has one to spare, forming a shared-electron chemical bond.
A Fluorine atom has an atomic number of 9. Draw out the electron shell diagram for Fluorine. Is a Fluorine atom more likely to gain, lose or share electrons to fill its valence shell?
I believe you are talking about fluorine. If you are, F needs one more electron to gain a full shell.If you go to WikiAnswers for this information, that is counterproductive, because there is a much better way to do it. Look at the periodic table. Groups IA through VIIIA tell you what you need to know. IA has one valence electron, IIA has two valence electrons etc. Fluorine is in group VIIA and therefore has seven valence electrons. All atoms want eight, and thus fluorine is in need of one more.
Fluorine has 7 valence electrons. In order to become stable, Florine will share 1 electron with another atom to get 8 electron and become stable.
When an atom gains or looses a valence electron it becomes a charged particle called an ion
gain one electron to form fluoride anion
It may lose or gain an electron in its valence shell.
Fluorine has 7 valence electrons and should gain 1 more electron.
Even though Fluorine has the highest electronegativity among all the elements and it should have the highest electron gain enthalpy among all the halogens but this is an exception and chlorine has higher electron gain enthalpy than Fluorine. The reason for this is that the size of Fluorine atom is very small and hence there is very high inter-electronic repulsion among the electrons of fluorine. This makes incoming of another electron not very favourable. Even though fluorine has large negative electron gain enthalpy but for chlorine its even more negative.
An atom with 4 valence electrons will have to either gain 4 electrons or lose 4 electrons to achieve a full set of eight electrons.
Aluminum, sulfur, fluorine, phosphorus, iodine, and neon
It has 7 electrons in its valance shell so it needs only 1 electron to form a octet; the Nobel gas configuration.
Valence electron describes type of element. It either lose or gain electron.