Added atoms electronegativity values YAML file

Author: LeenFahoum

data/electronegativity.yml

@@ -0,0 +1,65 @@
+# Atoms electronegativity values according to Pauling scale :
+# Source: National Center for Biotechnology Information (2025). Electronegativity in the Periodic Table of Elements.
+# Retrieved by May 7, 2025: https://pubchem.ncbi.nlm.nih.gov/periodic-table/electronegativity.
+
+H: 2.2
+He: 0.0
+Li: 0.98
+Be: 1.57
+B: 2.04
+C: 2.55
+N: 3.04
+O: 3.44
+F: 3.98
+Ne: 0.0
+Na: 0.93
+Mg: 1.31
+Al: 1.61
+Si: 1.9
+P: 2.19
+S: 2.58
+Cl: 3.16
+Ar: 0.0
+K: 0.82
+Ca: 1.0
+Sc: 1.36
+Ti: 1.54
+V: 1.63
+Cr: 1.66
+Mn: 1.55
+Fe: 1.83
+Co: 1.88
+Ni: 1.91
+Cu: 1.9
+Zn: 1.65
+Ga: 1.81
+Ge: 2.01
+As: 2.18
+Se: 2.55
+Br: 2.96
+Kr: 0.0
+Rb: 0.82
+Sr: 0.95
+Y: 1.22
+Zr: 1.33
+Nb: 1.6
+Mo: 2.16
+Tc: 1.9
+Ru: 2.2
+Rh: 2.28
+Pd: 2.2
+Ag: 1.93
+Cd: 1.69
+In: 1.78
+Sn: 1.96
+Sb: 2.05
+Te: 2.1
+I: 2.66
+Xe: 0.0
+Cs: 0.79
+Ba: 0.89
+La: 1.1
+Ce: 1.12
+Pr: 1.13
+Nd: 1.14
+Pm: 1.13