1

IIT-JEE 1990

MCQ (Single Correct Answer)
Amongst the following elements (whose electronic configuration are given below), the one having the highest ionization energy is:
A
[Ne] 3s23p1
B
[Ne] 3s23p3
C
[Ne] 3s23p2
D
[Ne] 3d104s24p3
2

IIT-JEE 1989

MCQ (Single Correct Answer)
Which one of the following is the strongest base?
A
AsH3
B
NH3
C
PH3
D
SbH3
3

IIT-JEE 1989

MCQ (Single Correct Answer)
Which one of the following is the smallest in size?
A
N3-
B
O2-
C
F-
D
Na+
4

IIT-JEE 1988

MCQ (Single Correct Answer)
The first ionisation potential of Na, Mg, Al and Si are in the order
A
Na < Mg > Al < Si
B
Na > Mg > Al > Si
C
Na < Mg < Al < Si
D
Na > Mg > Al < Si

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