1. ATOMIC STRUCTURE
electron
orbit
Nucleus

2. ATOMIC STRUCTURE

3. ATOMIC STRUCTURE
electron
orbit
Nucleus

4. ATOMIC STRUCTURE
Nucleus

5. ATOMIC STRUCTURE

6. ATOMIC STRUCTURE

7. ATOMIC STRUCTURE

8. ATOMIC STRUCTURE
STRUKTUR ATOM

9. + - ATOMIC STRUCTURE PROTON NEUTRON
Number of proton,Z + number of neutron = nucleon number,A

10. X ATOMIC STRUCTURE NUCLIDE NOTATION A Z A - Z = number of neutron
electron
orbit
Nucleus
NUCLIDE NOTATION
A = nucleon number A X Z
Z = proton number
A - Z = number of neutron

11. Element ATOMIC STRUCTURE EXERCISE Na 23 11 11 23 12 Ra 226 88 88 226
Number of protons
Number of nucleons
Number of neutrons Na 23 11 11 23 12 Ra
226 88 88
226
138 He 4 2 2 4 2

12. ATOMIC STRUCTURE
PROPERTIES OF PROTON,NEUTRON,ELECTRON
Element
Charge value P 1
+ 1.6 x 10 –19 C n 1 e -1
- 1.6 x 10 –19 C

13. ATOMIC STRUCTURE RADIOISOTOPES H 1 H 3 1 H 2 1 Proton number
Isotopes – elements which have the same proton number but
different nucleon number
Radioisotopes – isotopes which have unstable nuclei H 1 H 3 1 H 2 1
Proton number

14. ATOMIC STRUCTURE
EXERCISE
List the isotopes for Helium,Carbon and Cobalt

15. PAST YEARS QUESTION A B C D Nucleus contains proton and neutron
Which diagrams shows the correct path of the negatively
charged particle moves towards a nucleus of an atom ? A B C D
Nucleus contains proton and neutron
Neutron is negatively charged
Like charges will repel each others

16. What is the charge of proton ?
PAST YEARS QUESTION
Isotopes
of Hydrogen
Number
of protons
Number
of neutron
Number
of nucleon 1 H 1 1 1 2 H 1 1 A 1 X H 1 3 2 1
What is the charge of proton ?
Positive

17. What is meant by isotopes ?
PAST YEARS QUESTION
Isotopes
of Hydrogen
Number
of protons
Number
of neutron
Number
of nucleon 1 H 1 1 1 2 H 1 1 A 1 X H 1 3 2 1
What is meant by isotopes ?
Elements which have same proton number
but different nucleon number

18. PAST YEARS QUESTION Isotopes of Hydrogen Number of protons Number
of neutron
Number
of nucleon 1 H 1 1 1 2 H 1 1 A 1 X H 1 3 2 1
What is the value of A ? 2

19. PAST YEARS QUESTION Isotopes of Hydrogen Number of protons Number
of neutron
Number
of nucleon 1 H 1 1 1 2 H 1 1 A 1 X H 1 3 2 1
What is the value of X ? 3