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1) alpha particle 2) beta particle 3) gamma radiation 4) proton 5) neutron ANS: 2 13. Among the following the most effective atomic “bullets” are 1) alpha particles; 2) electrons; 3) protons; 4) gamma rays; 5) neutrons. ANS: 5 14. Alpha particles, beta particles and gamma rays all originate from the nucleus of a radioisotope. A particle property of ionising ra diation is its ability to ionise atoms. That is, this type of radiation can cause an electrically neutral atom to lose an electron, the atom becomes charged, and we call it an ion. Apr 03, 2016 · In 1909, Hans Geiger and Ernest Marsden, under the direction of Ernest Rutherford, bombarded a metal foil with alpha particles to observe how they scattered. They expected all the alpha particles to pass straight through with little deflection, because Thomson's model said that the charges in the atom are so diffuse that their electric fields ...
Apr 07, 2020 · Atoms combine with other atoms in simple whole number ratio forming compound atom or molecules. Contradiction by Modern Theory : Atoms are no longer indivisible. Atoms are made up of subatomic particles protons, electrons and neutrons. They can be changed in energy. Atoms of same elements may not be alike i.e. isotopes 12 6 C 13 6 C 4 6 C.
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Feb 25, 2009 · Corrosion of anodized 7075 T73 vs 7075 T6 aluminum February 25, 2009. We have two sets of anodized aluminum samples. Both sets were anodized at the same time in the same anodize tanks under the same conditions. The T6 temper samples passed the salt spray corrosion test while the T73 temper samples had corrosion pitting. Blue merle maltipoo puppies for sale.
Dec 27, 2017 · Alpha Radiation. Alpha radiation (α) is a type of ionizing radiation. Alpha radiation contains alpha particles. An alpha particle consists of two protons and two neutrons. Alpha radiation occurs when an atom undergoes radioactive decay. Due to the high mass and its electrical charge (+2), alpha particles strongly interact with matter. Multiplying the result of this calculation by the number of atoms in a mole gives a binding energy for helium of 2.730 x 10 12 joules per mole, or 2.730 billion kilojoules per mole. This calculation helps us understand the fascination of nuclear reactions. The energy released when natural gas is burned is about 800 kJ/mol.