0 20 40 60 80 100 1200

0.5

1

1.5

2

2.5

3

3.5

4

4.5

Atomic Number & Electronegativity: s and p Block Elements

Column L

Atomic Number

Ele

ctro

neg

ativ

ity

CHEM DATA

Symbol Period Name atomic # NotesH 1 Ia 1 hydrogen 1 1.008

He 18 VIIIa 1 helium 2 4.003Li 1 Ia 2 lithium 3 6.941Be 2 IIa 2 beryllium 4 9.012B 13 IIIa 2 boron 5 10.81 sublimesC 14 IVa 2 carbon 6 12.01 graphiteN 15 Va 2 nitrogen 7 14.01O 16 VIa 2 oxygen 8 15.99F 17 VIIa 2 fluorine 9 18.99

Ne 18 VIIIa 2 neon 10 20.18Na 1 Ia 3 sodium 11 22.99Mg 2 IIa 3 magnesium 12 24.31Al 13 IIIa 3 aluminum 13 26.98Si 14 IVa 3 silicon 14 28.09P 15 Va 3 phosphorus 15 30.97 whiteS 16 VIa 3 sulfur 16 32.07 yellowCl 17 VIIa 3 chlorine 17 35.45Ar 18 VIIIa 3 argon 18 39.95K 1 Ia 4 potassium 19 39.1

Ca 2 IIa 4 calcium 20 40.08Sc 3 IIIb 4 scandium 21 44.96Ti 4 IVb 4 titanium 22 47.88V 5 Vb 4 vanadium 23 50.94Cr 6 VIb 4 chromium 24 51.99Mn 7 VIIb 4 manganese 25 54.94Fe 8 VIIIb 4 iron 26 55.85Co 9 VIIIb 4 cobalt 27 58.93Ni 10 VIIIb 4 nickel 28 58.69Cu 11 Ib 4 copper 29 63.55Zn 12 IIb 4 zinc 30 65.38Ga 13 IIIa 4 gallium 31 69.72Ge 14 IVa 4 germanium 32 72.59

As 15 Va 4 arsenic 33 74.92Se 16 VIa 4 selenium 34 78.96Br 17 VIIa 4 bromine 35 79.9Kr 18 VIIIa 4 krypton 36 83.8Rb 1 Ia 5 rubidium 37 85.47Sr 2 IIa 5 strontium 38 87.62Y 3 IIIb 5 yttrium 39 88.91Zr 4 IVb 5 zirconium 40 91.22Nb 5 VIb 5 niobium 41 92.91Mo 6 VIb 5 molybdenum 42 95.94Tc 7 VIIb 5 technetium 43 98

New Group #

Old Group #

atomic mass

sublimes (28 atm)

Ru 8 VIIIb 5 ruthenium 44 101.07Rh 9 VIIIb 5 rhodium 45 102.91Pd 10 VIIIb 5 palladium 46 106.4Ag 11 Ib 5 silver 47 107.87Cd 12 IIb 5 cadmium 48 112.41In 13 IIIa 5 indium 49 114.82Sn 14 IVa 5 tin 50 118.69Sb 15 Va 5 antimony 51 121.75Te 16 VIa 5 tellurium 52 127.6I 17 VIIa 5 iodine 53 126.9

Xe 18 VIIIa 5 xenon 54 131.3Cs 1 Ia 6 cesium 55 132.91Ba 2 IIa 6 barium 56 137.33La 3 IIIb 6 lanthanum 57 138.91Ce f Lanthanides cerium 58 140.12Pr f Lanthanides praseodymium 59 140.91Nd f Lanthanides neodymium 60 144.24Pm f Lanthanides promethium 61 145Sm f Lanthanides samarium 62 150.4Eu f Lanthanides europium 63 151.96Gd f Lanthanides gadolinium 64 157.25Tb f Lanthanides terbium 65 158.93Dy f Lanthanides dysprosium 66 162.5Ho f Lanthanides holmium 67 164.93Er f Lanthanides erbium 68 167.26Tm f Lanthanides thulium 69 168.93Yb f Lanthanides ytterbium 70 173.04Lu f Lanthanides lutetium 71 174.97Hf 4 IVb 6 hafnium 72 178.49Ta 5 Vb 6 tantalum 73 180.95W 6 VIb 6 tungsten 74 183.85Re 7 VIIb 6 rhenium 75 186.21Os 8 VIIIb 6 osmium 76 190.2Ir 9 VIIIb 6 iridium 77 192.22Pt 10 VIIIb 6 platinum 78 195.09Au 11 Ib 6 gold 79 196.97Hg 12 IIb 6 mercury 80 200.59Tl 13 IIIa 6 thallium 81 204.37Pb 14 IVa 6 lead 82 207.2Bi 15 Va 6 bismuth 83 208.98Po 16 VIa 6 polonium 84 209At 17 VIIa 6 astatine 85 210Rn 18 VIIIa 6 radon 86 222Fr 1 Ia 7 francium 87 223.02Ra 2 IIa 7 radium 88 226.03Ac 3 IIIb 7 actinium 89 227.03Th f Actinides thorium 90 232.04Pa f Actinides protactinium 91 231.04U f Actinides uranium 92 238.03

Np f Actinides neptunium 93 237.05Pu f Actinides plutonium 94 244

Am f Actinides americium 95 243Cm f Actinides curium 96 247Bk f Actinides berkelium 97 247Cf f Actinides californium 98 251Es f Actinides einsteinium 99 252Fm f Actinides fermium 100 257Md f mendelevium 101 258No f nobelium 102 259Lr f lawrencium 103 260Rf 4 IVb Rutherfordium 104 261Ha 5 Vb Hahnium 105 262Sg 6 VIb Seaborgium 106 263Uns 7 VIIb Unnilseptium 107 262Uno 8 VIIIb Unniloctium 108 265Une 9 VIIIb Unnilennium 109 266

-259.1 -252.9 6.99E-05 2.1 1312 37-272.2 -268.9 1.79E-04 2377 32180.5 1342 5.43E-01 1 520 1341278 2970 1.85E+00 1.5 899 902079 2550 2.34E+00 2 801 823367 4827 2.25E+00 2.5 1086 77

-209.9 -195.8 1.25E-03 3 1420 75-218.4 -183 1.43E-03 3.5 1314 73-219.8 -188.1 1.70E-03 4 1681 72

-248 -248.7 9.00E-04 2088 7197.8 883 9.71E-01 0.9 495 154649 1090 1.74E+00 1.2 735 130660 2467 2.70E+00 1.5 580 118

1410 2355 2.33E+00 1.8 780 11144.1 280 1.82E+00 2.1 1060 106

112.8 444.7 2.07E+00 2.5 1005 102-101 -34.6 3.21E-03 3 1255 99

-189.2 -185.7 1.78E-03 1527 9763.25 760 8.60E-01 0.8 419 196

839 1484 1.55E+00 1 590 1741541 2832 2.99E+00 1.3 633 1441660 3287 4.54E+00 1.5 659 1361890 3380 6.11E+00 1.6 651 1251857 2672 7.19E+00 1.6 653 1271244 1962 7.43E+00 1.5 717 1391535 2750 7.86E+00 1.8 763 1251495 2870 8.90E+00 1.8 761 1261453 2730 8.90E+00 1.8 737 1211083 2567 8.96E+00 1.8 746 138

419.6 906 7.13E+00 1.6 906 13129.8 2403 5.90E+00 1.6 579 126

947.4 2830 5.32E+00 1.8 762 122

817 617 5.73E+00 2 947 119217 685 4.79E+00 2.4 941 116-7.2 58.8 3.12E+00 2.8 1140 114

-157 -152 3.74E-03 1356 11038.9 686 1.53E+00 0.8 409 211769 1384 2.54E+00 1 550 192

1523 3337 4.47E+00 1.3 600 1621852 4377 6.51E+00 1.4 640 1482468 4742 8.57E+00 1.6 652 1372617 4612 1.02E+01 1.8 684 1452172 4877 1.15E+01 1.9 702 156

Melting Point, °C

Boiling Point, °C

density g/mL

Electro-negativity

First Ion. Energy kJ/mol

Covalent Atomic Radius

pm

2310 3900 1.24E+01 2.2 710 1261966 3727 1.24E+01 2.2 720 1351554 3140 1.20E+01 2.2 804 131

962 2212 1.05E+01 1.9 731 153320.9 765 8.65E+00 1.7 868 148156.6 2080 7.31E+00 1.7 558 144

232 2270 7.31E+00 1.8 709 141631 1950 6.69E+00 1.9 834 138

449.5 989.8 6.24E+00 2.1 869 135113.5 184 4.93E+00 2.5 1008 133

-111.8 -107.1 5.89E-03 1176 13128.4 669 1.87E+00 0.7 382 225725 1640 3.50E+00 0.9 508 198920 3454 6.15E+00 1.1 538 169798 3257 6.66E+00 1.1 534931 3017 6.77E+00 1.1 527

1016 3127 7.00E+00 1.2 5331042 3000 7.26E+00 5401074 1794 7.52E+00 1.2 545

822 1529 5.24E+00 5471313 3273 7.90E+00 1.1 5931365 3230 8.23E+00 1.2 5661412 2567 8.55E+00 5731474 2700 8.80E+00 1.2 5811529 2868 9.07E+00 1.2 5891545 1950 9.32E+00 1.2 597

819 1196 6.97E+00 1.1 6031663 3402 9.84E+00 1.2 5242227 4600 1.33E+01 1.3 6592996 5425 1.66E+01 1.5 7613410 5660 1.93E+01 1.7 7703180 5600 2.10E+01 1.9 7603045 5030 2.26E+01 2.2 8402410 4130 2.24E+01 2.2 8801772 3827 2.14E+01 2.2 8701064 3080 1.93E+01 2.4 890-38.9 357 1.35E+01 1.9 1007

303 1457 1.19E+01 1.8 589 171327.5 1740 1.14E+01 1.8 723 175

271 1560 9.75E+00 1.9 711 170254 962 9.32E+00 2 821 176302 337 2.2 920 142-71 -61.8 9.73E-03 1042 14027 677 0.7 380

700 1140 5.00E+00 0.9 5091050 3200 1.01E+01 1.1 4991750 4790 1.17E+01 1.3 5871570 4000 1.54E+01 1.5 5681132 3818 1.90E+01 1.7 598

640 3900 2.02E+01 1.3 605641 3232 1.98E+01 1.3 585

994 2607 1.37E+01 1.3 5781340 1.35E+01 581

986 1.40E+01 601608619627635642