What is the energy level of samarium?
Energy Levels of Neutral Samarium ( Sm I )
| J | Level(cm-1) | Ref. |
|---|---|---|
| 1 | 292.58 | MZH78 |
| 2 | 811.92 | MZH78 |
| 3 | 1489.55 | MZH78 |
| 4 | 2273.09 | MZH78 |
How many electron energy levels does samarium Sm have?
62 electrons
Samarium atoms have 62 electrons and the electronic shell structure is [2, 8, 18, 24, 8, 2] with Atomic Term Symbol (Quantum Numbers) 7F0.
How many protons does an atom of samarium have?
62
Samarium/Atomic number
Diagram of the nuclear composition and electron configuration of an atom of samarium-152 (atomic number: 62), the most common isotope of this element. The nucleus consists of 62 protons (red) and 90 neutrons (blue).
How many neutrons does samarium 153 have?
List of isotopes
| Nuclide | Z | N |
|---|---|---|
| Excitation energy | ||
| 153Sm | 62 | 91 |
| 153mSm | 98.37(10) keV | |
| 154Sm | 62 | 92 |
How many protons neutrons and electrons are in samarium?
The nucleus consists of 62 protons (red) and 88 neutrons (orange). 62 electrons (white) successively occupy available electron shells (rings). Samarium is a lanthanide in period 6, and the f-block of the periodic table.
What is the mass number of samarium?
150.36 u
Samarium/Atomic mass
How many protons does 151 have?
Europium-151 is composed of 63 protons, 88 neutrons, and 63 electrons.
What is the group number of samarium?
Lanthanides
Fact box
| Group | Lanthanides | 1072°C, 1962°F, 1345 K |
|---|---|---|
| Period | 6 | 1794°C, 3261°F, 2067 K |
| Block | f | 7.52 |
| Atomic number | 62 | 150.36 |
| State at 20°C | Solid | 152Sm |
How many protons are there in samarium-147?
Properties of Samarium-147 Isotope:
| Properties of Samarium-147 Isotope: | SAMARIUM-147 |
|---|---|
| Atomic Number (Z) | 62 |
| Mass Number (A) | 147 |
| Nucleon Number (A) | 147 |
| Proton Number (Z) | 62 |
What is samarium on the periodic table?
samarium (Sm), chemical element, a rare-earth metal of the lanthanide series of the periodic table. Samarium is a moderately soft metal, silvery white in colour. It is relatively stable in air, slowly oxidizing to Sm2O3.
How many protons and electrons are in samarium?
Summary Element Samarium Number of protons 62 Number of neutrons (typical isotopes) 149, 150, 152, 154 Number of electrons 62 Electron configuration [Xe] 4f6 6s2
What kind of radiation does samarium 153 emit?
Paul Okunieff, in Clinical Radiation Oncology (Fourth Edition), 2016 Samarium 153. Samarium 153 is a man-made radionuclide that emits beta particles of 0.81 MeV (20%), 0.71 MeV (30%), and 0.64 MeV (50%) and gamma photons of 103 keV (28%). It has a relatively short half-life of 46.3 hours and, consequently, a relatively high dose-rate.
What is the atomic number of samarium 149?
Samarium 149 has a very large neutron capture cross-section (about 42,000 barns). Since natural samarium contains about 14% of 149Sm, it can be used as an absorbing material in control rods. Samarium is a chemical element with atomic number 62 which means there are 62 protons in its nucleus.
Are there any side effects to taking samarium 153?
As in Sr-89, the bone marrow toxicity is a limiting factor. Toxicity is usually mild, although serious side effects and even fatalities have been reported. Platelets decreased on the order of 25% from baseline and white blood cells by 20%. The short range of the Sm-153 beta particle should be advantageous when considering the dose to normal marrow.