
Fluorine element (F) is in group 17 and period 2 of a periodic table. Fluorine is in the p-block and it is classified as a halogen group element on the periodic table.
There is a lot more information related to fluorine which is mentioned in the Information Table given below.
So let’s dive right into it!
Table of contents
- Fluorine element (Information Table)
- Fluorine element in Periodic table
- Facts about Fluorine
- Properties of Fluorine
- Uses of Fluorine
Fluorine Element (Information Table)
The important data related to fluorine element is given in the table below.
Appearance of fluorine | Gaseous state has Pale yellow color Liquid state has Bright yellow color Alpha fluorine is Opaque Beta fluorine is Transparent |
Atomic number of fluorine | 9 |
Symbol of fluorine | F |
Atomic mass of fluorine | 18.998 u |
Protons, Neutrons & Electrons in fluorine | Protons: 9, Neutrons: 10, Electrons: 9 |
State of fluorine (at STP) | Gas |
Group number of fluorine in periodic table | 17 |
Period number of fluorine in periodic table | 2 |
Block of fluorine in periodic table | p-block |
Category of fluorine | Nonmetals (halogens) |
Bohr model or Electrons per shell or Electrons arrangement in fluorine | 2, 7 |
Electron configuration of fluorine | [He] 2s2 2p5 |
Orbital diagram of fluorine | ![]() |
Valence electrons in fluorine | 7 |
Electronegativity of fluorine (on pauling scale) | 3.98 |
Atomic radius of fluorine (van der Waals radius) | 135 picometers |
Density of fluorine | 1.696 g/L |
1st ionization energy of fluorine | 17.423 eV |
Main isotope of fluorine | 19F |
Melting point of fluorine (F2) | 53.48 K or -219.67 °C or -363.41 °F |
Boiling point of fluorine (F2) | 85.03 K or -188.11 °C or -306.6 °F |
Crystal structure of fluorine | Simple cubic |
Discovery of fluorine | By Andre-Marie Ampere in 1810 |
Also see: Interactive Periodic Table (It has rotating bohr models as well as many other details of all the 118 elements in a single periodic table).
Fluorine element in Periodic table
The Fluorine element (F) has the atomic number 9 and is located in group 17 and period 2. Fluorine is a nonmetal and it is classified as a halogen element.
H | He | ||||||||||||||||
Li | Be | B | C | N | O | F | Ne | ||||||||||
Na | Mg | Al | Si | P | S | Cl | Ar | ||||||||||
K | Ca | Sc | Ti | V | Cr | Mn | Fe | Co | Ni | Cu | Zn | Ga | Ge | As | Se | Br | Kr |
Rb | Sr | Y | Zr | Nb | Mo | Tc | Ru | Rh | Pd | Ag | Cd | In | Sn | Sb | Te | I | Xe |
Cs | Ba | La* | Hf | Ta | W | Re | Os | Ir | Pt | Au | Hg | Tl | Pb | Bi | Po | At | Rn |
Fr | Ra | Ac** | Rf | Db | Sg | Bh | Hs | Mt | Ds | Rg | Cn | Nh | Fl | Mc | Lv | Ts | Og |
*Ce | Pr | Nd | Pm | Sm | Eu | Gd | Tb | Dy | Ho | Er | Tm | Yb | Lu | ||||
**Th | Pa | U | Np | Pu | Am | Cm | Bk | Cf | Es | Fm | Md | No | Lr |
Facts about fluorine
Here are a few interesting facts about fluorine element.
- Human body contains approximately 3 mg of fluorine.
- Out of all the 118 elements on the periodic table, fluorine has the highest electronegativity.
- Fluorine has the atomic mass of 18.998 u, which makes it the lightest halogen on the periodic table.
- Fluorine is highly reactive and so it always exists as a compound with other elements. And fluorine is the 13th most abundant element present in the earth’s crust.
- Fluorine is very rarely present in the universe. Fluorine contributes only 400 parts per billion in the entire universe.
- The mineral of fluorine is fluorite (also known as fluorspar) and it glows in the dark when it is exposed to light.
- The stable isotope of fluorine is 19F and it is highly sensitive to magnetic fields.
Properties of fluorine
Here is a list of some physical properties and chemical properties of fluorine.
Physical properties of fluorine
- Fluorine is in gaseous state at STP and its color is light pale-yellow.
- The liquid fluorine has a bright yellow-color.
- Fluorine is the lightest halogen which has an atomic mass of 18.998 amu.
- The liquid fluorine is easily soluble in liquid oxygen and ozone.
- The smell of fluorine gas is highly pungent.
Chemical properties of fluorine
- Fluorine is a corrosive gas and it is highly toxic in nature.
- Fluorine is a reactive element and hence it always exists in a compound form with other elements.
- The reactivity of fluorine is very high and it can also affect diamonds up to some extent.
- Fluorine shows an explosive reaction with water.
- Fluorine does not show any reaction with noble gases like helium, neon and krypton.
Uses of fluorine
Here are some uses of the fluorine element.
- Sodium fluoride (NaF) is a compound of fluorine that is used in toothpaste, which helps in preventing dental cavities.
- Fluorine is used in making refrigerants like CFC (chlorofluorocarbon), which is used in Air conditioners, refrigerators, etc.
- The fluorine compounds are used in processing of nuclear fuels.
- Fluorine is also present in some drugs (in small proportions).
- Fluorine is used in the manufacturing of teflon.
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