Presentation Transcript
Structure of the Atom :Structure of the Atom Ions
Ions :Ions Atoms of the same element with different charges
Same number of protons & neutrons
***Different number of electrons
Ions are written in symbol notation
Symbol Charge
Na+1 Cl-1
Charge :Charge Normal atoms are neutral
Taking away electrons makes positive ions
Adding electrons makes negative ions
Finding the particles :Finding the particles Protons are still the same as the atomic number
Sodium- 11 p+ Chlorine- 17 p+
Neutrons are found with the periodic table.
Mass number – atomic number
Sodium: 23-11= 12 n Chlorine: 35-17= 18n
Electrons are found by taking the atomic number minus the charge
Sodium: 11-+1= 10 e- Chlorine: 17--1= 18e-