Surface & Nuclear Chemistry / भूतल और नाभिकीय रसायन
JEE Main & Advanced
Chemistry
Surface & Nuclear Chemistry / भूतल और नाभिकीय रसायन
Question Bank
Causes of radioactivity and Group displacement law
question_answer
When radium atom which is placed in II group, loses an \[\alpha \]- particle, a new element is formed which should be placed in group [CPMT 1979, 80, 94; NCERT 1979, 82]
A) Second
B) First
C) Fourth
D) Zero
Correct Answer:
D
Solution :
Going two positions back from 2nd group gives zero group.