Atomic Structure Flashcards
What is the relative mass of a proton?
1
What is the relative charge of a proton?
1
What is the relative mass of a neutron?
1
What is the relative charge of a neutron?
0
What is the relative mass of an electron?
1 / 1840
What is the relative charge of an electron?
-1
What is equal in a neutral atom?
The electrons and protons.
What holds protons and neutrons together in the centre of the from?
Strong nuclear force.
What holes electrons and protons together in the atom?
Electrostatic force.
What determines the chemical properties of an atom?
The number of electrons in the outer shell.
What is an alternative name for the atomic number?
Proton number z.
What do you add together to get the mass number of an atom?
The number of protons and the number of neutrons.
What are responsible for almost all of the mass in an atom?
The nucleons.
What are isotopes?
Atoms of a particular element which have the same number of protons in its nucleus and the same number of electrons, however the neutron number varies.
What does the top (superscript) number refer to with an isotope?
The number of protons and neutrons.
