1
IIT-JEE 2000 Screening
MCQ (Single Correct Answer)
+1
-0.25
The electronic configuration of an element is 1s2, 2s2 2p6, 3s2 3p6 3d5, 4s1 This represents its
A
excited state
B
ground state
C
cationic form
D
anionic form
2
IIT-JEE 2000 Screening
MCQ (Single Correct Answer)
+1
-0.25
The correct order of radii is
A
N < Be < B
B
F- < O2- < N3-
C
Na < Li < K
D
Fe3+ < Fe2+ < Fe4+
3
IIT-JEE 2000 Screening
MCQ (Single Correct Answer)
+1
-0.25
The correct order of acidic strength is
A
Cl2O7 > SO2 > P4O10
B
CO2 > N2O5 > SO3
C
Na2O > MgO > Al2O3
D
K2O > CaO > MgO
4
IIT-JEE 2000 Screening
MCQ (Single Correct Answer)
+1
-0.25
Amongst H2O, H2S, H2Se and H2Te, the one with the highest boiling point is
A
H2O because of hydrogen bonding
B
H2Te because of higher molecular weight
C
H2S because of hydrogen bonding
D
H2Se because of lower molecular weight
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