Radon (86)
Periodic Table's 86 th atom is Radon This atom is a radioactive gas, short-lived, It is used for environmental hazard, surgical implants for cancer treatment.
Francium (87)
Periodic Table's 87 th atom is Francium This atom is a radioactive, short-lived, Small traces in nature.
Radium (88)
Periodic Table's 88 th atom is Radium This atom is a radioactive, long-lived, It is used luminous watches (now banned), medical radon production and radiography.
Actinium (89)
Periodic Table's 89 th atom is Actinium This atom is a radioactive, long-lived, small traces in nature. It is used cancer medicine and neutron sources.
Thorium (90)
Periodic Table's 90 th atom is Thorium This atom is a radioactive, long-lived, most abundant radioactive element, nuclear reactor fuel, gas lamp mantles, tungsten filaments.
Protactinium (91)
Periodic Table's 91 th atom is Protactinium This atom is radioactive, long-lived, dense. Small traces in nature and no uses
Uranium (92)
Periodic Table's 92 th atom is Uranium This atom is radioactive, long-lived, dense. It used for nuclear reactor fuel, counterweights and nuclear weapons.
Neptunium (93)
Periodic Table's 93 th atom is Neptunium This atom is radioactive, long-lived and small traces in nature. Also, used for neutron detectors, dosimeters and nuclear weapons.
Plutonium (94)
Periodic Table's 94 th atom is Americium This atom is radioactive, long-lived and small traces in nature. Also, used for nuclear reactor fuel, nuclear weapons and spacecraft power.
Americium (95)
Periodic Table's 95 th atom is Americium This atom is radioactive, long-lived and never found in nature. Also uses for Smoke detectors and sheet thickness gauges.
Curium (96)
Periodic Table's 96 th atom is Berkelium This atom is radioactive, long-lived and never found in nature.
Berkelium (97)
Periodic Table's 97 th atom is Berkelium This atom is radioactive, long-lived and never found in nature.
Californim (98)
Periodic Table's 98 th atom is Californium This atom is radioactive, long-lived and never found in nature.
99 to 118 Elements
পর্যায় সারণীতে ১১৮ টি মৌলের মধ্যে ৯৯ থেকে ১১৮ অর্থাৎ শেষের দিকের মৌল গুলো সাধারণ একই ধরনের বৈশিষ্ট্য দেখিয়ে থাকে। এদের কিছু কিছু বৈশিষ্ট্য ছাড়া বাকি সব কিছুই একই রকম। যেমনঃ এরা তেজস্ক্রিয় স্বল্পজীবি প্রকৃতিতে সাধারণ দেখা যায় না, এদের তেমন একটা ব্যবহার ও নেই।
Periodic Tables in Pictures
Periodic table of the Elements in Pictures Here we try to give you a pictorial view of Periodic Table every element which is found in nature. Gradually we give all the elements pictorial details and their uses separately so that you can understand better.
Periodic Table
The periodic table of elements arranges all of the known chemical elements in an informative array. Elements are arranged from left to right and top to bottom in order of increasing atomic number. The rows are called periods. The period number of an element signifies the highest energy level an electron in that element occupies. Elements that occupy the same column on the periodic table (called a "group") have identical valance electron configurations and consequently behave in a similar fashion chemically. Here we have divided whol…
Hydrogen (H)
Hydrogen (H), a colourless, odourless, tasteless, flammable gaseous substance that is the simplest member of the family of chemical elements.Hydrogen is a diatomic molecule, H2. The earliest known important chemical property of hydrogen is that it burns with oxygen to form water, H2O; indeed, the name hydrogen is derived from Greek words meaning “maker of water.”
Alkali Metals
The alkali metals are a group of chemical elements from the s-block of the periodic table with similar properties: they appear silvery and can be cut with a plastic knife. Alkali metals are highly reactive at standard temperature and pressure and readily lose their outermost electron to form cations with charge +1. All the discovered alkali metals occur in nature. The alkali metals are lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs),and francium (Fr).
Alkaline Earth Metal
The alkaline earth metals (beryllium, magnesium, calcium, strontium, barium, and radium) are the second most reactive metals in the periodic table, and, like the Group 1 metals, have increasing reactivity in the higher periods. the alkaline earth metals are so reactive that they are never found in elemental form in nature. Because they form +2 ions that have very negative reduction potentials
Noble Gas
Noble gas, any of the seven chemical elements that make up Group 18 (VIIIA) of the periodic table. The elements are Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), Radon (Rn), and Oganesson (Og). The noble gases are colourless, odourless, tasteless, nonflammable gases. They traditionally have been labelled Group 0 in the periodic table because for decades after their discovery it was believed that they could not bond to other atoms; that is, that their atoms could not combine with those of other elements to form chemical compound…
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