Zirconium has the closest mass being 91.2g/mol
In the natural form, it is Zr with 40 protons, 51 neutrons and 40 electrons. . But some isotopes have an atomic mass of 91 too.
Zirconium is a metal element. Atomic mass of it is 91.
It is the measure of a specific amount of mass.
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91 kilograms.Your mass doesn't change. It's the amount of stuff you're made of. It's the same wherever you are.The gravitational force between you and another object depends on the mass of the other object.That force is called your "weight".Your mass of 91 kilograms weighs about 891.8 newtons (200.6 pounds) on earth. If you ever standon the moon, your mass of 91 kilograms will weigh about 145.6 newtons (32.8 pounds) there.
The atomic mass of Rhodium (Rh) is approximately 102.91 atomic mass units.
The mass of 1 grain is equal to 64,798 91 g.
Zerconium is a metal element. Atomic mass of it is 91.
It would be actinium with 89 protons and a mass of 230.
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Protactinium has 91 protons and electrons; the number of neutrons is different for each isotope: Number of neutrons = Atomic Mass of the isotope - 91
Protactinium has 91 electrons; the valence is 4 or 5.