Atomic structure and isotopes Flashcards
1
Q
definition of isotope
A
atoms of the same element with different number of neutrons and different masses
2
Q
relative atomic mass
A
The weighted mean mass of an atom of an element compared with 1/12th the mass of an atom of C12.
3
Q
Relative isotopic mass
A
Mass of an atom of an isotope compared with 1/12th the mass of the atom of C12.
4
Q
where are electrons found in an atom?
A
Energy levels (shells).
5
Q
explain the forces which are present in an atom
A
Repulsion between electrons and nuclear force of attraction between electrons and nucleus.
6
Q
How do two elements of an atom react similar chemically
A
as they have the same electron configuration
7
Q
What is the atomic number?
A
The number of protons and electrons.
8
Q
What is atomic mass?
A
The number of protons and neutrons.
