Nuclear - Note-A-Rific: Nuclear In the early part of this...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Note-A-Rific: Nuclear In the early part of this century, physicists were uncertain about the structure of the nucleus of an atom. By the 1930s a model had been developed that answered many questions. This was based on information that had been discovered by people like Millikan and Thomson. The nucleus is made up of two types of particles (referred to as “ nucleons ”) 1. Proton positive charge = +e (remember “e” stands for “elementary charge”, and does not necessarily have anything to do with electrons) mass ! m p = 1.6726 x 10 -27 kg number of protons in a nucleus ! atomic number (symbol is “Z”) It is the number of protons in the nucleus that determine which element you are dealing with. a single proton is the entire nucleus of the simplest atom, hydrogen 2. Neutron no charge mass ! m n = 1.6749 x 10 -27 kg The total number of nucleons (protons + neutrons) in a nucleus is called the atomic mass number (symbol “A”). An atom with 7 protons and 8 neutrons would be written as Z = 7 and A = 15.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/29/2012 for the course PHYS 227 taught by Professor Rabe during the Fall '08 term at Rutgers.

Page1 / 2

Nuclear - Note-A-Rific: Nuclear In the early part of this...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online