Protactinium (Pa) Element: History, Properties, Toxicity, Hazard
The atomic number of protactinium is 91. It is found in f-block and Period 7 of the periodic chart. The symbol ‘Pa’ represents it. The name derives from word “Protos,” … Read more
The periodic table is an arrangement of all known elements in order of increasing atomic number and recurring chemical properties.
The atomic number of protactinium is 91. It is found in f-block and Period 7 of the periodic chart. The symbol ‘Pa’ represents it. The name derives from word “Protos,” … Read more
The atomic number of thorium is 90. It is found in f-block and Period 7 of the periodic chart. The symbol ‘Th’ represents it. The name derives from the Scandinavian … Read more
The atomic number of actinium is 89. It is found in f-block and Period 7 of the periodic chart. The symbol ‘Ac’ represents it. The name is derived from the … Read more
Radium is a chemical element with an atomic number of 88 and is represented by the symbol ‘Ra’ in the periodic table. It is silvery-white in appearance classified as alkaline … Read more
Polonium is a chemical element with an atomic number of 84 and is represented by the symbol ‘Po’ in the periodic table. It is silvery in appearance and belongs to the … Read more
Radon is the last member of the noble gas family. The noble gases are the elements that make up Group 18 (VIIIA) of the periodic table. Radon has the atomic … Read more
Bismuth is a chemical element with an atomic number of 83 and is represented by the symbol ‘Bi’ in the periodic table. It is white with a reddish pink tinge in … Read more
Francium is a chemical element with the atomic number 87 and it is represented by the symbol ‘Fr’ in the periodic table. It belongs to Group 1 and Period 7 … Read more
Astatine is a chemical element with an atomic number of 85 and is represented by the symbol ‘At’ in the periodic table. Its appearance is unknown classified as metal and … Read more