Chem 3.3 and 3.4 isotopes and average atomc mass Flashcards
What does the symbol upper left of the isotope symbol mean
Mass number
What are different versions of the same element called with a differentiation of neutrons
Isotopes
What does the symbol lower left of the isotope symbol mean
Atomic number
Mass number
The approximate mass, (sum of protons and neutrons) because protons and neutrons contain most of mass, electrons too light to consider
How is an isotope name written
Name of element-mass number
Average atomic mass
Weighted average mass of all the isotopes of the element
What are the chances the mass of an atom will equal its elements average atomic mass
0%
How are ions formed
By an atom gaining or losing electrons
What distinguishes a neutral atom from an ion
A charge
Where is the charge located in the isotope signal
Upper right of symbol
Where are nonmetals located and what is their charge
Right of the staircase, anions
Where are metals located and what do they form
Left of the staircase, cations
