Know The Symbols and Atomic Numbers of 118 Elements

Know The Symbols and Atomic Numbers of 118 Elements

Know The Symbols and Atomic Numbers of 118 ElementsConsider all of the symbols and abbreviations we use in our daily lives. An emoticon on your cell phone is a frequent example of a sign that you use every day. You just use a smiling face to express your happiness about something. 

You don’t text ‘I’m happy about it,’ you just include a smiley face. Instead of using the full version of your name, for example, Elwin, you might use a shorthand version of your name, a nickname, like Bill. Chemical symbols are used similarly. 

A chemical symbol is a simplified way of expressing an element. Instead of spelling out an element’s name, we express it with one or two letters.

The periodic table, as you may know, is a handy reference tool for chemists. The periodic table, which you will find in this article, arranges the elements according to the size of the atom that makes up the element and the characteristics of those atoms. Each element is denoted by a chemical symbol made up of letters. 

What is an Atomic Number?

The number of protons in an element determines its atomic number, and it is used to distinguish one element from another. The number of protons and neutrons united in an element determines its mass number.

The contemporary periodic table is set up so that all of the elements have a growing atomic number and, as a result, an increasing mass number. But do you know what a mass number or an atomic number is?

An atom is made up of protons, electrons, and neutrons, as you may know. An atom’s valency is determined by the number of electrons in the outermost shell.

Here’s the chart of 118 elements and their symbols:        

Element Symbol Atomic Number
Hydrogen H 1
Helium He 2
Lithium Li 3
Beryllium Be 4
Boron B 5
Carbon C 6
Nitrogen N 7
Oxygen O 8
Fluorine F 9
Neon Ne 10
Sodium Na 11
Magnesium Mg 12
Aluminium Al 13
Silicon Si 14
Phosphorous P 15
Sulpfur S 16
Chlorine Cl 17
Argon Ar 18
Potassium K 19
Calcium Ca 20
Scandium Sc 21
Titanium Ti 22
Vanadium V 23
Chromium Cr 24
Manganese Mn 25
Iron Fe 26
Cobalt Co 27
Nickel Ni 28
Copper Cu 29
Zinc Zn 30
Gallium Ga 31
Germanium Ge 32
Arsenic As 33
Selenium Se 34
Bromine Br 35
Krypton Kr 36
Rubidium Rb 37
Strontium Sr 38
Yttrium Y 39
Zirconium Zr 40
Niobium Nb 41
Molybdenum Mo 42
Technetium Tc 43
Ruthenium Ru 44
Rhodium Rh 45
Palladium Pd 46
Silver Ag 47
Cadmium Cd 48
Indium In 49
Tin Sn 50
Antimony Sb 51
Tellurium Te 52
Iodine I 53
Xenon Xe 54
Caesium Cs 55
Barium Ba 56
Lanthanum La 57
Cerium Ce 58
Praseodymium Pr 59
Neodymium Nd 60
Promethium Pm 61
Samarium Sm 62
Europium Eu 63
Gadolinium Gd 64
Terbium Tb 65
Dysprosium Dy 66
Holmium Ho 67
Erbium Er 68
Thulium Tm 69
Ytterbium Yb 70
Lutetium Lu 71
Hafnium Hf 72
Tantalum Ta 73
Tungsten W 74
Rhenium Re 75
Osmium Os 76
Iridium Ir 77
Platinum Pt 78
Gold Au 79
Mercury Hg 80
Thallium Tl 81
Lead Pb 82
Bismuth Bi 83
Polonium Po 84
Astatine At 85
Radon Rn 86
Francium Fr 87
Radium Ra 88
Actinium Ac 89
Thorium Th 90
Protactinium Pa 91
Uranium U 92
Neptunium Np 93
Plutonium Pu 94
Americium Am 95
Curium Cm 96
Berkelium Bk 97
Californium Cf 98
Einsteinium Es 99
Fermium Fm 100
Mendelevium Md 101
Nobelium No 102
Lawrencium Lr 103
Rutherfordium Rf 104
Dubnium Db 105
Seaborgium Sg 106
Bohrium Bh 107
Hassium Hs 108
Meitnerium Mt 109
Darmstadtium Ds 110
Roentgenium Rg 111
Copernicium Cn 112
Nihonium Nh 113
Flerovium Fl 114
Moscovium Mc 115
Livermorium Lv 116
Tennessine Ts 117
Oganesson Og 118

What is Valency?

The combined capacity of atoms or molecules is measured by valency. As a result, a single atom of one element can react and combine with another element’s specific number of atoms.

Electrons in an atom are grouped in several orbitals (shells) denoted by the letters L, K, M, N, etc. Valence electrons are electrons found in an atom’s outermost shell/orbit. Valence electrons participate in any chemical reaction because the electrons in the outermost orbit often have higher energy than electrons in other orbits.

According to the Bohr-bury theory, the outermost orbit of an atom will contain a maximum of 8 electrons. However, if the outermost orbit is entirely filled, the element exhibits little or no chemical activity. Their aggregate capability is reduced to zero or minimal.

Because their outermost orbit is entirely filled, noble gases are the least reactive. On the other hand, other elements’ reactivity is determined by their ability to acquire noble gas configuration. It will also aid in determining an atom’s valency.

Key Takeaways: List of the Elements

  • The periodic table has 118 elements.
  • The periodic table arranges the elements in ascending atomic number order.
  • The number of protons in each atom of an element identifies it. This number represents the atomic number.
  • Some elements’ names indicate which element group they belong to.
  • Each element has a symbol that consists of one or two letters. The initial letter of each word is always capitalised. If a second letter is present, it is in lowercase.


There are currently no vacant places in the periodic table up to element 118. The current table has seven periods. Simultaneously, scientists are attempting to manufacture even heavier elements. Once a new element has been synthesised, the IUPAC must examine the study before a new name and symbol may be assigned. 

The discoverer is allowed to propose a new name and symbol, but IUPAC has an ultimate say. The systematic element name is used until a replacement name is authorised. Element 120, for example, bears the provisional name unbinilium. This name describes the element’s atomic number, followed by the suffix -ium. Because the interim designations are tiresome, referring to an unconfirmed element by its atomic number is appropriate (e.g., element 122, element 145).