What element has the atomic number 76?

Osmium
Osmium – Element information, properties and uses | Periodic Table.

What is rhenium in the periodic table?

element 75
Rhenium, element 75 on the periodic table, belongs to the cluster of elements known as the transition group of elements. It was the last of the natural elements to be discovered, some 50 years after the introduction of the periodic table. It is a silvery white, rare, heavy, polyvalent transition metal.

What is the atomic mass of rhenium 187?

186.9557531
Properties of Rhenium-187 Isotope:

Properties of Rhenium-187 Isotope:	RHENIUM-187
Atomic Mass (Da)	186.9557531
Relative Isotopic Mass	186.9557531
Neutron Number (N)	112
Atomic Number (Z)	75

What atom has 76 protons 41 neutrons and 70 electrons?

Osmium | Os (Element) – PubChem.

Who discovered rhenium 188?

Discovery of rhenium and masurium (technetium) by Ida Noddack-Tacke and Walter Noddack. Forgotten heroes of nuclear medicine. Nuklearmedizin. 2015;54(6):N50-4.

What is isotopes of rhenium?

Naturally occurring rhenium (75Re) is 37.4% 185Re, which is stable (although it is predicted to decay), and 62.6% 187Re, which is unstable but has a very long half-life (4.12×1010 years).

Does rhenium oxidize?

(The melting point of rhenium, 3,180 °C [5,756 °F], is exceeded only by those of tungsten and carbon.) The metal powder slowly oxidizes in air above 150 °C (300 °F) and rapidly at higher temperatures to form the yellow heptoxide, Re2O7.

Where is rhenium located?

Commercial rhenium is obtained from molybdenum roaster-flue dusts found in copper-sulfide ores. However, rhenium does not occur freely in nature or as a compound in mineral ores. Molybdenum contains from 0.002 percent to 0.2 percent rhenium, and the element is found widely spread through the Earth’s crust.

What is the atomic mass of rhenium 185?

184.952 958
Rhenium

Isotope	Atomic mass (Da)	Isotopic abundance (amount fraction)
185Re	184.952 958(6)	0.3740(5)
187Re	186.955 752(5)	0.6260(5)