atomic structure 0.0 / 5 ? ChemistryAtoms and compoundsIGCSEAll boards Created by: iona.flCreated on: 03-06-16 10:15 What do atoms consist of? A central nucleus, made of protons and neutrons, surrounded by electrons orbiting in shells 1 of 9 What does mass number mean? The total number of protons and neutrons in an atom 2 of 9 What does atomic number mean? The total number of protons and neutrons in a nucleus. 3 of 9 What does isotope mean? Atoms of an element with the same number of protons and electrons but different numbers of neutrons. 4 of 9 What does relative atomic mass mean? Atoms' masses compared to each other. 5 of 9 How is the periodic table arranged? Elements in order of atom iv number 6 of 9 How do you work out the amount if neutrons? mass number - atomic number (both shown on table) 7 of 9 What is electronic configuration? A description of how the electrons are arranged 8 of 9 What are the vertical columns i the periodic table called and what do they show? They are called groups, the number of electrons in the outer shell of all the elements in a group is the same as the group number. 9 of 9
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