Types of radiation:• List the three types of radiation and describe the conditions under which each case occurs.Alpha, Beta, Gamma.Alpha radiation/emission - Alpha particles are the nuclei of a helium atom 42He. Composed of two protons and two neutrons, positively charged. Nuclei are ejected from heavy, unstable nuclei in order to remove excess protons and neutrons. However, the nuclei formed could still be radioactive and further decay would occur. Alpha emissions occur in nuclei with atomic number greater than 83. For example 23892U  42He + 23490Th (both mass and number of protons are conserved during the reaction) Beta radiation/emission – Beta particles are electrons (0-1e ) that were released from the nucleus of a radioactive atom when a neutron decays into a proton and an electron. Beta decay/emission occurs when the neutron/proton ratio is too high due to an excess of neutrons. 10n  11p + 0-1e (Mass is still conserved as is the number of protons.) Gamma Radiation/Emission – Gamma ray emission can be found when alpha or beta decay occurs. Gamma rays are high-energy electromagnetic rays. Gamma radiation is simply the excess energy of the reaction that is dissipated, gamma rays do not affect mass numbers or atomic numbers. 6027Co  6028Ni + 0-1e + yAs the elements become heavier, the neutron:proton ratio moves away from being 1:1, Bands of instability surround the band of stability showing where the neutron:proton ratios are too high large or too small,• Discuss the half-life of radioactive elements. “The half-life of a radioisotope is the time required for half the atoms in a given sample to undergo radioactive decay; for any particular radioisotope, the half-life is independent of the initial amount of… half the paper… was measured only in milliseconds. Uuq-292 lost 3 neutrons, and subsequently the resulting isotope decayed further from alpha emission. 24494Pu + 4820Ca  292114Uuq  289114Uuq + 3(10n), this states that superheavy elements can be produced in the laboratory. Isotopes: atoms of the same element (same atomic number) but with different number of neutrons, different mass number. Works Cited Levy, Gioele. The chemistry book on the bedside table. vol. 1. Millers Point: Pier 9, 2011. 34-84. 1 vol. Print.Keep the science simple. Production of materials. Port Macquarie: Keep it Simple Science, 2005. 24-27. PrintSmith, Roland. Conquering chemistry: HSC course. 4th ed. vol. 1. N/A: Cengage Learning Australia, 2010. 74-90. 1 vol. Print.Thickett, Geoffrey. Chemistry 2: HSC course. N/A ed. vol. 1. Milton: John Wiley & Sons Australia, 2006. 94-108. 1 vol. Press.