Beta radiation is caused by two different reactions:
Beta Plus Decay:
n -> P+ e(-)+v
Where n is a neutron, P is a proton, e(-) is an electron and v is a neutrino (in this case an anti-neutrino)
and
Beta Minus Decay:
P -> n +e(+) +v
where e(+) is a positron
since atomic number is the number of protons, depending on the decay involved it will change by 1 or -1
There is no easy way to tell the number of neutrons an element might have, other then to look it up somewhere. Some references will give you the mass number, which is the total number of protons & neutrons. Also, most elements belong to a family of "isotopes" ,which is the same element with different numbers of neutrons. Usually the one you find in a reference is the one most abundantly found in nature. For example, the element Hydrogen can be found with 0 neutrons, with 1 neutron or with 2 neutrons. The most abundant isotope of Hydrogen is the one with 0 neutrons, but a large enough sample of Hydrogen will contain a few 1 neutron types. The 2 neutron types are rare because they are radioactive and after a short time change into Helium. A Periodic Table will give you the Atomic Mass of the atom. This is the total mass of the Neutrons & Protons. Since atomic masses of protons & neutrons are nearly equal you can find the mass number by rounding off the atomic mass to the nearest whole number. Then get the Neutron number by subtracting the atomic number. For example, Thorium has atomic mass 232.0381. Round this off to 232, then subtract 90 to get 142 neutrons.(for the most abundant isotope of Thorium). The number of neutrons depends on the isotope of the element; thorium has ca. 30 isotopes with different atomic masses (atomic mass rounded - atomic number 90 = number of neutrons).
The resulting element is protactinium, atomic number 91.
It decays to Radium with mass 86 and atomic number 88
Atomic number is 91
The number of protons remain unchanged.
In each case, two neutrons must be lost.
Common compounds of thorium: thorium dioxide, thorium trifluoride, thorium tetrafluoride, thorium tetrachloride, thorium triiodide, thorium diiodide, thorium tetraiodide, thorium nitrate, thorium oxalate, thorium carbide, thorium sulfides, thorium nitride, thorium oxinate, etc.
Thorium (Th).
Thorium is a tetravalent element. Thorium react slowly with water; thorium can react with concentrated nitric acid and hydrogen chloride. Thorium can react with the majority of other chemical elements. The Pauling electronegativity of thorium is 1,3.
Bitumen has not thorium.
Thorium can react with the majority of non metals; with metals thorium form alloys.
Thorium is a member of the actinoids family; the atomic number is 90.
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Common compounds of thorium: thorium dioxide, thorium trifluoride, thorium tetrafluoride, thorium tetrachloride, thorium triiodide, thorium diiodide, thorium tetraiodide, thorium nitrate, thorium oxalate, thorium carbide, thorium sulfides, thorium nitride, thorium oxinate, etc.
Thallium Wrong, check the periodic table, it's "Thorium" number 90 on the table
Thorium is a member of the actinoids family; it is also placed in the period 7 of the periodic table of Mendeleev.
Hazards and Health Considerations: Thorium presents both a toxic and radiological hazard. Toxicologically, it causes heavy metal poisoning similar to lead or the uranium isotopes. Biologically, thorium accumulates in the skeletal system where it has a biological half-life of 200 years, the same as plutonium. An M 17 protective mask and standard anti-contamination clothing will adequately protect against thorium.
Thorium and fluorine Thorium trifluoride - ThF3 Thorium tetrafluoride - ThF4
All chemical elements are placed in the periodic table.
The atomic number of thorium, Th, is 90 and it is an inner transition element in the Actinide series. The Actinide series is the second of the two series shown by themselves. It starts Actinium, Thorium, Protactinium, and Uranium, so Thorium is the second element in the Actinide series.
Thorium is a member of the actinoids family, period 7 in the periodic table of Mendeleev. The half life of 232Th is 1,405.1010 years.
Element 90 is thorium.
Thorium don't smell.