The Structure of the Atom + Nuclide Notation Flashcards
What are atoms
Atoms are tiny particles that are present in all elements
what is in the nucleus of every atom
protons and neutrons
What orbits around the nucleus of an atom
electrons
What charge does a proton have
one positive
What charge does an electron have
one negative
What charge does a neutron have
neutral/no charge
What does the atomic number tell us about an atom
how many protons it has
What does the mass number tell us
how many protons and neutron are in the nucleus of an atom
How can we calculate the number of neutrons
number of neutrons = mass number - atomic number
In nuclide notation, what is the number located at the top left of the atom indicate
mass number
In nuclide notation, what is the number located at the bottom left of the atom indicate
atomic number
What is the approximate mass of protons and neutrons
one atomic mass unit
What is the approximate mass of electrons
virtually no mass
In a neutral atom, electrons are also equal to…
protons
