Periodic Table of the Elements

Nonmetals

Nonmetals include hydrogen, carbon, nitrogen, phosphorus, oxygen, sulfur, selenium, the halogens fluorine, chlorine, bromine, and iodine, and the noble gas elements. Oxygen and other element in this group comprise a large portion of the Earth’s crust. Hydrogen, oxygen, carbon, and nitrogen are elements found in all living organisms. Most atoms of nonmetals are small and have high numbers of electrons, which makes these elements fairly inert and gives them high electronegativities.More

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

What are Nonmetals?

In chemistry, a nonmetal is a chemical element that generally lacks a predominance of metallic properties; they range from colorless gases (like hydrogen) to shiny solids (like carbon, as graphite). The electrons in nonmetals behave differently from those in metals. With some exceptions, those in nonmetals are fixed in place, resulting in nonmetals usually being poor conductors of heat and electricity and brittle or crumbly when solid. The electrons in metals are generally free moving and this is why metals are good conductors and most are easily flattened into sheets and drawn into wires. Nonmetal atoms tend to attract electrons in chemical reactions and to form acidic compounds. Two nonmetals, hydrogen and helium, make up about 99% of ordinary matter in the observable universe by mass. Five nonmetallic elements, hydrogen, carbon, nitrogen, oxygen and silicon, largely make up the Earth's crust, atmosphere, oceans and biosphere. Most nonmetals have biological, technological or domestic roles or uses. Living organisms are composed almost entirely of the nonmetals hydrogen, oxygen, carbon, and nitrogen. Nearly all nonmetals have individual uses in medicine and pharmaceuticals; lighting and lasers; and household items. While the term non-metallic dates from as far back as 1566, there is no widely agreed precise definition of a nonmetal. Some elements have a marked mixture of metallic and nonmetallic properties; which of these borderline cases are counted as nonmetals can vary depending on the classification criteria. Fourteen elements are effectively always recognized as nonmetals and up to about nine more are frequently to sometimes added, as shown in the periodic table extract.