According to the Avogadro constant, 1 mole of any substance contains 6. Naturally occurring isotopes are marked in green light green = naturally occurring radionuclides. This is some easy math: chromium (Cr, 24) has an Atomic Mass of 52 grams per mole (from the Periodic Table ). Isotones and IsobarsThe following table shows the atomic nuclei that are isotonic (same neutron number N = 39) and isobaric (same nucleon number A = 63) with Chromium-63.

Half-life T ½ = 129(2) ms respectively 1.29 × 10 -1 seconds s.

Some content may have been moved to our new secondary mirroring service. Name of the isotope: Chromium-63 Cr-63 Symbol: 63Cr Mass number A: 63 Atomic number Z: 24 (= number of protons) Neutrons N: 39 Isotopic mass: 62.96134(38) u ( atomic weight of Chromium-63) Nuclide mass: 62.9481744 u (calculated nuclear mass without electrons) Mass excess: -36.01156 MeV Mass defect: 0.564392492 u (per nucleus) Nuclear binding energy: 525.72821994 MeV (per nucleus) 8.34489238 MeV (average binding energy per nucleon) Separation energy: S N = 3.18(39) MeV (first neutron) S P = 17.82(47) MeV (first proton) Half-life: 129(2) ms Decay constant λ: 5.373233957829 s -1 Spin and parity: 1/2- Year of discovery: 1992 chromium (Cr), chemical element of Group 6 (VIb) of the periodic table, a hard steel-gray metal that takes a high polish and is used in alloys to increase strength and corrosion resistance. Changes in stable chromium isotopes (denoted as 53Cr) in ancient carbonate sediments are increasingly used to reconstruct the oxygenation history in Earths. Your donation powers our service to the FOSS community.

Chromium 58 chromium 63