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Einsteinium – The Number of Neutrons in an Einsteinium Atom

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The number of neutrons in an einsteinium atom is 99.

One of the most interesting elements in the periodic table, this element was discovered in 1952. Physicists at the Argonne Laboratory, Los Alamos National Laboratory and the University of California at Berkeley were examining debris left behind by the first hydrogen bomb test in November 1952.

The team, led by Albert Ghiorso, found minuscule amounts of the element in the debris (less than 200 atoms). In 1955, it was named after scientist Albert Einstein as an honor for his contributions to science.

Einsteinium is an actinide element that is the seventh transuranic element to be discovered. It was formed in the explosion of the first hydrogen bomb, Mike, in November 1952 and was kept secret for a few years because it is extremely rare.

This element is a member of the actinide group, which has similar properties to the lanthanoids europium and ytterbium. It is a tripositive, meaning it can oxidize in a +3, -3, or +1 state; it also has a face-centered cubic crystal structure and a metallic luster.

A proton is a positively charged particle with an actual charge of +1.602 x 10-19 coulombs. It is the smallest and most fundamental of all matter.

Its diameter is 2.4 x 10-13 cm.

The number of protons in an atom is 114 and the number of electrons is 126. Each atom has an outer shell of electrons and a central shell of protons.

The Number of Electrons in Actinium

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The number of electrons in an electrically neutral atom is 89. Besides the total number of protons in its nucleus, the atomic number of actinium is also 89.

The atomic mass of actinium is 227 grams/mol. It is located in period 7 of the periodic table. It is an actinide metal element, with 89 protons and 138 neutrons in its nucleus.

This element was first isolated in 1899 by French chemist Andre-Louis Debierne in pitchblende residues left after Pierre and Marie Curie had extracted radium. It was later discovered independently by Friedrich Oskar Giesel in 1902.

Unlike other radioactive elements, actinium is not produced naturally on earth. It occurs only in trace amounts in uranium ore.

It is a very strong radioactive metal. It glows pale blue in the dark and is about 150 times more radioactive than radium.

Actinium is a member of the group of chemical elements called the actinide series, which resembles the rare-earth lanthanoid elements in its chemistry. It has a half-life of over 185 days, and its daughter isotopes decay by emitting alpha particles.

In solution, actinium ions are colourless. They exhibit an oxidation state of +3 and behave closely to the lanthanoid elements.

The main uses of actinium are a source of neutrons and as a radiation therapy agent. It is an extremely rare substance, largely produced in the laboratory. It has a high price and is not commercially available. The element is only found in trace amounts in uranium ores and is usually obtained by treating radium with neutrons in a reactor.