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1
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
$$L{i^ + } > B{e^{2 + }} > N{a^ + } > M{g^{2 + }}$$
2
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
3
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
The increasing order of the first ionization enthalpies of the elements B, P, S and F (lowest first) is :
A
F < S < P < B
B
P < S < B < F
C
B < P < S < F
D
B < S < P < F
4
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
In which of the following arrangements the order is NOT according to the property indicated against it?
A
Li < Na < K < Rb Increasing metallic radius
B
I < Br < F < Cl Increasing electron gain enthalpy (with negative sign)
C
B < C < N < O Increasing first ionization enthalpy
D
Al3+ < Mg2+ < Na+ < F- Increasing ionic size
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