Alpha emission in an atom reduces its atomic number by two. An alpha particle is actually the nucleus of a helium-4 atom.   In alpha decay, atomic number decreases by 2, and atomic mass decreases by 4.  .   An alpha particle is two protons and two neutrons, this is the same as a helium nucleus.
On most PraxisÂ® tests, each selected-response question answered. correctly is worth one raw point, and your total raw score is the. number of questions answered correctly on the full test. Selected-. response questions are scored by computer.
Each LSAT will typically have 100 to 103 questions, and your Raw LSAT Score is a number between 0 and that maximum of 100 to 103. In computing your Raw LSAT Score there is no deduction for incorrect answers and all questions are weighted equally.o while you got 65% of the questions right you are in the 70.9th percentile meaning your LSAT Scaled Score was better than 70.9% of the people who wrote the LSAT in the last three years. Note that the table below is a guide and minor variances will occur with each writing of the LSAT.