1

IIT-JEE 1987

MCQ (Single Correct Answer)
The first ionisation potential in electron volts of nitrogen and oxygen atoms are respectively given by
A
14.6, 13.6
B
13.6, 14.6
C
13.6, 13.6
D
14.6, 14.6
2

IIT-JEE 1982

MCQ (Single Correct Answer)
The element with the highest first ionization potential is
A
boron
B
carbon
C
nitrogen
D
oxygen
3

IIT-JEE 1981

MCQ (Single Correct Answer)
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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