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1
AIEEE 2010
MCQ (Single Correct Answer)
+4
-1
The correct sequence which shows decreasing order of the ionic radii of the elements is
A
Al3+ > Mg2+ > Na+ > F- > O2-
B
Na+ > Mg2+ > Al3+ > O2– > F–
C
Na+ > F– > Mg2+ > O2– > Al3+
D
O2– > F– > Na+ > Mg2+ > Al3+
2
AIEEE 2009
MCQ (Single Correct Answer)
+4
-1
In which of the following arrangements, the sequence is not strictly according to the property written against it
A
CO2 < SiO2 < SnO2 < PbO2 : increasing oxidising power
B
HF < HCl < HBr, HI : increasing acid strength
C
NH3 < PH3 < AsH3 < SbH3 : increasing basic strength
D
B < C < O < N : increasing first ionization enthalpy
3
AIEEE 2009
MCQ (Single Correct Answer)
+4
-1
The set representing the correct order of ionic radius is :
A
$$N{a^ + } > L{i^ + } > M{g^{2 + }} > B{e^{2 + }}$$
B
$$L{i^ + } > N{a^ + } > M{g^{2 + }} > B{e^{2 + }}$$
C
$$M{g^{2 + }} > B{e^{2 + }} > L{i^ + } > N{a^ + }$$
D
$$L{i^ + } > B{e^{2 + }} > N{a^ + } > M{g^{2 + }}$$
4
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
Following statements regarding the periodic trends of chemical reactivity of the alkali metals and the halogens are given. Which of these statements gives the correct picture?
A
The reactivity decreases in the alkali metals but increases in the halogens with increase in atomic number down the group
B
In both the alkali metals and the halogens the chemical reactivity decreases with increase in atomic number down the group
C
Chemical reactivity increases with increase in atomic number down the group in both the alkali metals and halogens
D
In alkali metals the reactivity increases but in the halogens it decreases with increase in atomic number down the group
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