The nucleus loses an alpha particle, which takes two protons and two neutrons out of the nucleus. This reduces the isotope number by four, and the atomic number by two. An exa â¦ mple is the alpha decay of thorium-232 (atomic number 90) to radium-228 (atomic number 88).
A raze permit is authorization for complete demolition of a building or structure. A raze permit may also be required if most of a building is to be demolished. HPO clearance of raze applications safeguards against demolition of historic properties by accident or without proper public notice.
Radon is a naturally occurring radioactive gas released when uranium in soil and/or rock breaks down. Radon is invisible, odourless and tasteless. Radon does not tend to be a health issue outdoors, as atmospheric mixing dilutes the gas to low concentrations.here are two options to test buildings for radon: 1  Do-it-yourself radon test kit. 2  Can be purchased over the internet, at local hardware, home improvement, or building supply stores, or from Ottawa Public Health*. 3  The cost of testing ranges from $25 - $170. * 4 to purchase a kit from Ottawa Public Health, please call: 613-580-6744. 5  Hire a radon 6  .... Fo