Vanadium-49

Properties and data of the isotope ⁴⁹V.

Contents

General Data

Radioactive Decay

Parent Nuclides

Isotones und Isobares

See also: List of individual Vanadium isotopes (and general data sources).

General data

Name of the isotope:Vanadium-49; V-49Symbol:⁴⁹V or 4923VMass number A:49 (= number of nucleons)Atomic number Z:23 (= number of protons)Neutrons N:26Nucleon pairing (Z - N):odd - evenNuclear ratio (N/Z ratio):1.1304347826087 (= neutron-proton ratio)Neutron excess (N-Z):3Isotopic mass:48.9485107(9) u (atomic weight of Vanadium-49)Nuclide mass:48.9358936 u (calculated nuclear mass without electrons)Mass excess:-47.96197 MeVMass defect:0.456752852 u (per nucleus)Nuclear binding energy:425.46254112 MeV (per nucleus)
8.682909 MeV (average binding energy per nucleon)Separation energy:S_N = 11.5555(13) MeV (first neutron)
S_P = 6.7582(8) MeV (first proton)Half-life:330(15) dDecay constant λ:2.431242302911 × 10^-8 s^-1Specific activity α:3.050267419326 × 10⁺¹⁴ Bq g^-1
8243.96599818 Ci g^-1Spin and parity:
(nuclear angular momentum)7/2-Isobaric spin: 3/2Magnetic dipole moment:μ(μ_N) = 4.47(5)Nuclear g-factor:g_l = 1.2771428571429Mirror nucleus:Iron-49Year of discovery:1940

Radioactive Decay

Half-life T_½ = 330(15) d respectively 2.851 × 10⁷ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EC	⁴⁹Ti	100 %	0.6019(8) MeV

Parent Nuclides

Direct parent isotope is: ⁴⁹Cr.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 26) and isobaric (same nucleon number A = 49) with Vanadium-49. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 26	Isobar A = 49
11	³⁷Na
12	³⁸Mg
13	³⁹Al
14	⁴⁰Si
15	⁴¹P
16	⁴²S	⁴⁹S
17	⁴³Cl	⁴⁹Cl
18	⁴⁴Ar	⁴⁹Ar
19	⁴⁵K	⁴⁹K
20	⁴⁶Ca	⁴⁹Ca
21	⁴⁷Sc	⁴⁹Sc
22	⁴⁸Ti	⁴⁹Ti
23	⁴⁹V	⁴⁹V
24	⁵⁰Cr	⁴⁹Cr
25	⁵¹Mn	⁴⁹Mn
26	⁵²Fe	⁴⁹Fe
27	⁵³Co	⁴⁹Co
28	⁵⁴Ni	⁴⁹Ni
29	⁵⁵Cu
30	⁵⁶Zn