Tuesday 7 May 2013

7.3 understand the terms atomic (proton) number, mass (nucleon) number and isotope

The atomic mass of an element (the number written above an elements symbol) is the number of protons + the number of neutrons.

The atomic number is the number of protons. This will equal the number of electrons in an element.

An isotope of an element is one with the same configuration of protons and electrons but a different amount of neutrons.

wyzant

4 comments:

  1. Same configuration of protons and electrons isn't it? :)

    ReplyDelete
  2. This comment has been removed by the author.

    ReplyDelete
  3. This comment has been removed by the author.

    ReplyDelete