Transcript Atomic Number

Challenge Biomedical Science –
Nanotechnology
Task 3 – Atomic Structure
Proton – small particle with a positive charge found in the nucleus of the
atom
Neutron – a particle with no charge found in the nucleus of the atom.
Electron – very small negatively charged particle found in the space surrounding
the nucleus
We can find the atomic structure by using the atomic number and mass number. These give us the
information needed to see how the atom is built up.
Atomic Number = the number of protons in the nucleus of an atoms = the number of electrons
Mass Number = the number of protons + the number of neutrons
Mass
Number
12
6
Number of Protons = Atomic Number = 6
C
Atomic Number
Number of Neutrons = Mass number – number of protons
=6
Number of Electrons = Number of Protons = 6
Challenge Biomedical Science –
Nanotechnology
Draw the atomic structure using the information you have been
given.
Proton
E.G.
12
6
Neutron
C
Electro
n
Your turn – on the spare sheet provided draw the structure of these
atoms.
a)
b)
c)
14
N
7
9
Be
4
23
Na
11