Why is florin more electronegative than chlorine

chlorine

chlorine, Cl, Element of main group VII of the periodic table, the halogens, atomic number 17. Chlorine has the electron configuration [Ne] 3s23p5 and occurs naturally in two isotopes (Table 1). The production of Cl is of technical importance2 (by electrolytic oxidation: Chlor-alkali electrolysis). [AFM]

Chlorine 1: Important isotopes.

isotope Natural
frequency
[%]
Atomic mass Half-life
time T1/2
use
35Cl 75,77 34,968852 stable NMR
36Cl 0 35,968306 3,1×105 a Tracer
37Cl 24,23 36,965903 stable NMR

Chlorine 2: General, chemical and solid-state physical properties.

Relative atomic mass (12C = 12.0000) 35,4527
density
gaseous [gl-1]
firm [gcm-3]
(239.6 K)

3,214
1,5
Molar volume [cm3] 17,46
Oxidation numbers Cl-I, ClI.,
ClIII - ClVII
Crystal structure

tetragonal
orthorhombic
Lattice constant [nm]
a = 0.856; c = 0.612
a = 0.624; b = 0.448;
c = 0.826
Transition temperature
T (tetrag.

orthorh.) = 100 K
Space group

tetragonal
orthorhombic

P4 / ncm
Cm approx

Chlorine 3: Thermal and electromagnetic properties.