Elements With Their Atomic Number


Advertisements


  • Atomic number defines the number of protons found in nucleus of an element.

  • The total number of protons and neutrons (found in nucleus) is calculated as the atomic mass number.

  • The following table illustrates the some of the significant elements with their atomic number, atomic mass, and symbols −

Element Atomic Number Atomic Mass (g mol-1) Symbol
Hydrogen 1 1.0079 H
Helium 2 4.00 He
Lithium 3 6.94 Li
Beryllium 4 9.01 Be
Boron 5 10.81 B
Carbon 6 12.01 C
Nitrogen 7 14.0067 N
Oxygen 8 16.00 O
Fluorine 9 19.00 F
Neon 10 20.1797 Ne
Sodium 11 22.989768 Na
Magnesium 12 24.3050 Mg
Aluminum 13 26.981539 Al
Silicon 14 28.0855 Si
Phosphorus 15 30.973762 P
Sulfur 16 32.066 S
Chlorine 17 35.4527 Cl
Argon 18 39.948 Ar
Potassium 19 39.0983 K
Calcium 20 40.078 Ca
Scandlum 21 44.955910 Sc
Titanium 22 47.867 Ti
Vanadium 23 50.9415 V
Chromium 24 51.9961 Cr
Manganese 25 54.93805 Mn
Iron 26 55.845 Fe
Cobalt 27 58.93320 Co
Nickel 28 58.6934 Ni
Copper 29 63.546 Cu
Zinc 30 65.39 Zn
Gallium 31 69.723 Ga
Germanium 32 72.61 Ge
Arsenic 33 74.92159 As
Selenium 34 78.96 Se
Bromine 35 79.904 Br
Krypton 36 83.80 Kr
Rubidium 37 85.4678 Rb
Strontium 38 87.62 Sr
Yttrium 39 88.90585 Y
Zirconium 40 91.224 Zr
Niobium 41 92.90638 Nb
Molybdenum 42 95.94 Mo
Technetium 43 97.9072 Te
Ruthenium 44 101.07 Ru
Rhodium 45 102.90550 Rh
Palladium 46 106.42 Pd
Silver 47 107.8682 Ag
Cadmium 48 112.411 Cd
Indium 49 114.818 In
Tin 50 118.710 Sn
Antimony 51 121.760 Sb
Tellurium 52 127.60 Te
Iodine 53 126.90447 I
Xenon 54 131.29 Xe
Cesium 55 132.90543 Cs
Barium 56 137.327 Ba
Lanthanum 57 138.9055 La
Cerium 58 140.115 Ce
Praseodymium 59 140.90765 Pr
Neodymium 60 144.24 Nd
Promethium 61 144.9127 Pm
Samarium 62 150.36 Sm
Europium 63 151.965 Eu
Gadolinium 64 157.25 Gd
Terbium 65 158.92534 Tb
Dysprosium 66 162.50 Dy
Holmium 67 164.93032 Ho
Erbium 68 167.26 Er
Thulium 69 168.93421 Tm
Ytterbium 70 173.04 Yb
Lutetium 71 174.967 Lu
Hafnium 72 178.49 Hf
Tantalum 73 180.9479 Ta
Tungsten 74 183.84 W
Rhenium 75 186.207 Re
Osmium 76 190.23 Os
Iridium 77 192.217 Ir
Platinum 78 195.08 Pt
Gold 79 196.96654 Au
Mercury 80 200.59 Hg
Thallium 81 204.3833 Tl
Lead 82 207.2 Pb
Bismuth 83 208.98037 Bi
Polonium 84 208.9824 Po
Astatine 85 209.9871 At
Radon 86 222.0176 Rn
Francium 87 223.0197 Fr
Radium 88 226.0254 Ra
Actinium 89 227.0278 Ac
Thorium 90 232.0381 Th
Protactinium 91 231.0388 Pa
Uranium 92 238.0289 U
Neptunium 93 237.0482 Np
Plutonium 94 244.0642 Pu
Americium 95 243.0614 Am
Curium 96 247.0703 Cm
Berkelium 97 247.0703 Bk
Californium 98 251.0796 Cf
Einsteinium 99 252.083 Es
Fermium 100 257.0951 Fm
Mendelevium 101 258.10 Md
Nobelium 102 259.1009 No
Lawrencium 103 262.11 Lr
Unnilquadium 104 261.11 Unq
Unnilpentium 105 262.114 Unp
Unnilhexium 106 263.118* Unh
Unnilseptium 107 262.12 Uns


Advertisements
E-Books Store