Plutonium Element in Periodic Table | Atomic Number Atomic Mass

Plutonium Element:

Plutonium is a radioactive chemical element and it is a member of group 3 and period 7 in the periodic table. The atomic number of plutonium is 94 and it is indicated by symbol is Pu. It is an actinide metal of silvery-gray appearance that tarnishes when exposed to air, and forms a dull coating when oxidized. Plutonium was first produced and isolated by a deuteron bombardment of uranium-238 in the 60-inch cyclotron at the University of California, Berkeley on December 14, 1940. It has normally six allotropes at a high temperature with in a limited pressure range. Plutonium has been characterized by twenty radioactive isotopes. ²⁴⁴Pu, ²⁴²Pu and ²³⁹Pu are the longest lived isotopes of plutonium.

Uses Of Plutonium Element:

• Plutonium was used in the first atomic bombs and now also used in nuclear weapons.
• The pioneer and Voyager space probes used plutonium nuclear batteries as a power source.
• Tiny amount of plutonium is used in early pacemaker batteries.

Plutonium Element Information:

Discovery year: (1940–1)

Discovered by: Glenn T. Seaborg, Arthur Wahl, Joseph W. Kennedy, Edwin McMillan

Atomic number: 94

Relative atomic mass: [244] 

Electron configuration: [Rn] 5f⁶ 7s²

Block: f-block 

Other elements in the same block:

Cerium, Praseodymium, Neodymium, Promethium, Samarium, Europium, Gadolinium, Terbium, Dysprosium, Holmium, Erbium, Thulium, Ytterbium, Lutetium, Thorium, Protactinium, Uranium, Neptunium, Americium, Curium, Berkelium, Californium, Einsteinium, Fermium, Mendelevium, Nobelium and  Lawrencium are the elements in the same block.

Period: period 7 

Other elements in the same period:

Francium, Radium, Actinium, Thorium, Protactinium, Uranium, Neptunium, Americium, Curium, Berkelium, Californium, Einsteinium, Fermium, Mendelevium, Nobelium, Lawrencium, Rutherfordium, Dubnium, Seaborgium, Bohrium, Hassium, Meitnerium, Darmstadtium, Roentgenium, Copernicium, Nihonium, Flerovium, Moscovium, Livermorium, Tennessine and Oganesson.

Group: Actinides

Other elements in the same group:

Thorium, Protactinium, Uranium, Neptunium, Americium,  Curium, Berkelium, Californium, Einsteinium, Fermium, Mendelevium, Nobelium and Lawrencium are the elements in the same group.

Other elements in the same orbital:

Actinium, Thorium, Protactinium, Uranium, Neptunium, Americium, Curium, Berkelium, Californium, Einsteinium, Fermium, Mendelevium, Nobelium and Lawrencium are the elements in the same orbital.

Allotropes: none

Key isotopes: ²³⁸Pu, ²³⁹Pu, ²⁴⁰Pu 

Melting point: 640°C, 1184°F, 913 K

Boiling point: 3228°C, 5842°F, 3501 K

Element category: actinide 

Density (g cm⁻³): 19.7

CAS number: 7440-07-5

Color: silvery white

You can know detailed information for each element,

Hydrogen, Helium, LithiumBeryllium, Boron, Carbon, Nitrogen, Oxygen, Fluorine,  Neon , Sodium, Magnesium, Aluminium, Silicon, Phosphorus, Sulfur, Chlorine, Argon, Potassium, Calcium, Scandium, Titanium, Vanadium, Chromium, Manganese, Iron, Cobalt, Nickel, Copper, Zinc, Gallium, Germanium, Arsenic, Selenium, Bromine, Krypton,  Rubidium, Strontium, Yttrium, Zirconium, Niobium, Molybdenum, Technetium, Ruthenium, Rhodium, Palladium, Silver, Cadmium, Indium, Tin, Antimony, Tellurium, Iodine, Xenon,  Caesium, Barium, Lanthanum,  Cerium, Praseodymium, Neodymium, Promethium, Samarium, Europium, Gadolinium, Terbium, Dysprosium, Holmium, Erbium, Thulium, Ytterbium, Lutetium, Hafnium, Tantalum, Tungsten, Rhenium, Osmium, Iridium, Platinum, Gold, Mercury, Thallium, Lead, Bismuth, Polonium, Astatine, Radon,  Francium, Radium, Actinium, Thorium, Protactinium, Uranium, Neptunium, Plutonium, Americium, Curium, Berkelium, Californium, Einsteinium, Fermium, Mendelevium, Nobelium, Lawrencium, Rutherfordium, Dubnium, Seaborgium, Bohrium, Hassium, Meitnerium, Darmstadtium, Roentgenium, Copernicium, Nihonium, Flerovium, Moscovium, Livermorium, Tennessine, Oganesson.