How should I know you idiot!
Igneous rock. If you are in FIS you know me. O.K.
Igneous rock. If you are in FIS you know me. O.K.
They are mostly Synthetic elements (when nuclear particles are forced to crash into one another by a particle accelerator (machine)). These Elements are Radioactive.
Radioactive elements are able to ionize the air.
Radioactive elements include all elements whose nuclei either:contain protons more than 83 proton, orcontain neutron to proton ratio out of the stability ratio.refer to related question below.
It is the atomic number. It is the physical property.
All or almost all elements have radioactive isotopes if artificial isotopes are included. Among the naturally occurring elements, uranium, polonium, radium, and thorium have naturally occurring radioactive isotopes on earth.
Chemical property
A fee simple ownership represents absolute ownership of real property.
Constellations don't have an absolute magnitude. That is a property of individual stars.
No
What elements are similar to iron in a chemical property on the Periodic Table