NATIONAL OPEN UNIVERSITY OF NIGERIA
14/16 AHMADU BELLO WAY, VICTORIA ISLAND, LAGOS
SCHOOL OF SCIENCE AND TECHNOLOGY
MARCH/APRIL 2014 EXAMINATION
COURSE CODE: CHM406
COURSE TITLE: NUCLEAR AND RADIOCHEMISTRY
TIME ALLOWED: 2 ½ HOURS
INSTRUCTION: ANSWER ANY FOUR (4) QUESTIONS. EACH QUESTION CARRIES 171/2MARKS.
QUESTION 1
A (i) what is radioactivity? (2 mark)
ii) Briefly discuss the types of radioactivity (4 marks)
B Differentiate between ordinary chemical reactions and nuclear reactions (4 marks)
C Define these terms in radioactivity
(i) Nuclear Stability (2 mark)
(ii) Electron capture (2 mark)
(iii) Gamma ray emission (2 mark
d. _______________ + 27 Al
