1
IIT-JEE 1982
MCQ (Single Correct Answer)
+1
-0.25
The element with the highest first ionization potential is
A
boron
B
carbon
C
nitrogen
D
oxygen
2
IIT-JEE 1981
MCQ (Single Correct Answer)
+1
-0.25
The correct order of second ionisation potential of carbon, nitrogen, oxygen and fluorine is
A
C > N > O > F
B
O > N > F > C
C
O > F > N > C
D
F > O > N > C
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