What is Air Pollution?
What is Air Pollution? Air pollution refers to any physical and chemical or biological change in the air. It is the contamination of air by… Read More »What is Air Pollution?
Chemistry
Thallium Properties
Thallium is a chemical element with the symbol Tl and atomic number 81. It is a gray post-transition metal that is not found free in nature. When isolated, Tl resembles tin but… Read More »Thallium Properties
Bismuth Chemical Element Properties
Bismuth is a chemical element with the symbol Bi and atomic number 83. It is a brittle white metal with a pinkish tinge. It is located in Group V of the Periodic Table… Read More »Bismuth Chemical Element Properties
Polonium Chemical Element Properties
Polonium is a chemical element with the symbol Po and atomic number 84. It was discovered by Marie Sklodowska Curie and Pierre Curie in 1898. Rare and highly radioactive metal with no stable… Read More »Polonium Chemical Element Properties
Mercury Chemical Element Properties
Mercury is a chemical element with the symbol Hg and atomic number 80. It is commonly known as quicksilver and was formerly named hydrargyrum. As a chemical element, It cannot be created or destroyed. The… Read More »Mercury Chemical Element Properties
Astatine Chemical Element Properties
Astatine is a chemical element with the symbol At and atomic number 85. It is the rarest naturally occurring element in the Earth’s crust, occurring only as of the decay product of various… Read More »Astatine Chemical Element Properties
Radon Element Properties
Radon is a chemical element with the symbol Rn and atomic number 86. It is a radioactive, colorless, odorless, tasteless noble gas. It occurs naturally in minute quantities as an intermediate step in the normal… Read More »Radon Element Properties
Lead Chemical Element Properties
Lead is a chemical element with the symbol Pb and atomic number 82. It is soft and malleable, and also has a relatively low melting point. When freshly cut, It… Read More »Lead Chemical Element Properties
Radium Element Properties
Radium is a chemical element with symbol Ra and atomic number 88. It is the sixth element in Group 2 of the periodic table. Pure Ra is… Read More »Radium Element Properties
Actinium Chemical Element
Actinium is a chemical element with the symbol Ac and atomic number 89. It was discovered in 1899 by French chemist André-Louis Debierne in pitchblende residues left after French physicists Pierre and Marie… Read More »Actinium Chemical Element