Fluorine Element (Periodic Table)

Fluorine

Fluorine (F) is a chemical element of the periodic table, located in the group 17 and the period 2, and is having the atomic number 9. It is a pale yellow or green gas, whose name comes from the Latin word “fluere”, which means to flow. It is a reactive nonmetal and is the 13th most abundant element on earth. It is the most electronegative element. It is the first element in the halogen group and is the lightest halogen.

group
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
period
1
1
H
2
He
2
3
Li
4
Be
5
B
6
C
7
N
8
O
9
F
10
Ne
3
11
Na
12
Mg
13
Al
14
Si
15
P
16
S
17
Cl
18
Ar
4
19
K
20
Ca
21
Sc
22
Ti
23
V
24
Cr
25
Mn
26
Fe
27
Co
28
Ni
29
Cu
30
Zn
31
Ga
32
Ge
33
As
34
Se
35
Br
36
Kr
5
37
Rb
38
Sr
39
Y
40
Zr
41
Nb
42
Mo
43
Tc
44
Ru
45
Rh
46
Pd
47
Ag
48
Cd
49
In
50
Sn
51
Sb
52
Te
53
I
54
Xe
6
55
Cs
56
Ba
72
Hf
73
Ta
74
W
75
Re
76
Os
77
Ir
78
Pt
79
Au
80
Hg
81
Tl
82
Pb
83
Bi
84
Po
85
At
86
Rn
7
87
Fr
88
Ra
104
Rf
105
Db
106
Sg
107
Bh
108
Hs
109
Mt
110
Ds
111
Rg
112
Cn
113
Nh
114
Fl
115
Mc
116
Lv
117
Ts
118
Og
57
La
58
Ce
59
Pr
60
Nd
61
Pm
62
Sm
63
Eu
64
Gd
65
Tb
66
Dy
67
Ho
68
Er
69
Tm
70
Yb
71
Lu
89
Ac
90
Th
91
Pa
92
U
93
Np
94
Pu
95
Am
96
Cm
97
Bk
98
Cf
99
Es
100
Fm
101
Md
102
No
103
Lr
– p block

FAQs on Fluorine Element

Fluorine
‣ What does fluorine look like?

Appearance:
gas: very pale yellow
liquid: bright yellow
solid: alpha is opaque, beta is transparent
‣ Who discovered fluorine? When was fluorine discovered?

Discovery: Andre-Marie Ampere (1810)
First isolation: Henri Moissan (June 26, 1886)
Named by: Humphry Davy and Andre-Marie Ampere
‣ Where is fluorine located on the periodic table?

Fluorine Periodic Table

Location: Fluorine is found in the second row of the periodic table, next to the oxygen element.
‣ What is fluorine’s atomic number?

Atomic number (Z): 9
‣ What is fluorine’s symbol?

Symbol: F
‣ What is the atomic weight of fluorine?

Standard atomic weight: 18.998403163
‣ What block does fluorine belong to?

Block: p-block
‣ What group is fluorine in on the periodic table?

Group: 17 (halogens)
‣ Which period does fluorine belong to?

Period: 2
Fluorine covalent radius: 64 pm
Fluorine Van der Waals radius: 135 pm
‣ What is fluorine’s melting point?

Melting point: (F2) 53.48 K (-219.67 °C, -363.41 °F)
‣ What is fluorine’s boiling point?

Boiling point: (F2) 85.03 K (-188.11 °C, -306.60 °F)
Fluorine critical point: 144.41 K, 5.1724 MPa
Fluorine triple point: 53.48 K, 90 kPa
‣ How many electron shells does fluorine have?

Electrons per shell: 2, 7
‣ What is the ground state electron configuration for fluorine?

Electron configuration: [He] 2s2 2p5
Fluorine allotropes: alpha, beta
‣ What is the ionization energy of fluorine?

Ionization energies:
1st: 1681 kJ/mol
2nd: 3374 kJ/mol
3rd: 6147 kJ/mol
‣ What is the phase of fluorine?

Phase (at r.t): gas
‣ What is fluorine’s density?

Density (at STP): 1.696 g/L
when liquid (at b.p): 1.505 g/cm3
Fluorine magnetic ordering: diamagnetic (-1.2 × 10-4)
Fluorine natural occurrence: primordial
‣ What is the oxidation state of fluorine?

Oxidation state: -1
‣ What is fluorine’s electronegativity value?

Electronegativity: Pauling scale: 3.98
Fluorine heat of vaporization: 6.51 kJ/mol
Fluorine molar heat capacity:
Cp: 31 J/(mol K) (at 21.1 °C)
Cv: 23 J/(mol K) (at 21.1 °C)
‣ What is the crystal structure of fluorine?

Crystal structure: cubic
Thermal conductivity of fluorine: 0.02591 W/(m.K)
Fluorine CAS number: 7782-41-4

‣ Fluorine vapor pressure

Vapor pressure
P (Pa)1101001 k10 k100 k
at T (K)384450586985

‣ How many isotopes does fluorine have?

Main isotopes of fluorine
IsotopeAbundanceHalf-life (t1/2)Decay modeProduct
18Ftrace109.8 minβ+ (97 %)
ε (3 %)
18O
18O
19F100 %stable

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