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Test Index
JEE Main 5 Apr 2024 Shift 2 Paper
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Section:
Chemistry
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© examsnet.com
Question : 79 of 90
Marks:
+1
,
-0
The correct statements from the following are :
(A) The decreasing order of atomic radii of group 13 elements is
T
l
>
I
n
>
G
a
>
A
l
>
B
\mathrm{Tl} > \mathrm{In} > \mathrm{Ga} > \mathrm{Al} > \mathrm{B}
Tl
>
In
>
Ga
>
Al
>
B
.
(B) Down the group 13 electronegativity decreases from top to bottom.
(C)
A
l
\mathrm{Al}
Al
dissolves in dil.
H
C
l
\mathrm{HCl}
HCl
and liberate
H
2
\mathrm{H}_2
H
2
​
but conc.
H
N
O
3
\mathrm{HNO}_3
HNO
3
​
renders
A
l
\mathrm{Al}
Al
passive by forming a protective oxide layer on the surface.
(D) All elements of group 13 exhibits highly stable +1 oxidation state.
(E) Hybridisation of
A
l
\mathrm{Al}
Al
in
[
A
l
(
H
2
O
)
6
]
3
+
[\mathrm{Al}(\mathrm{H}_2\mathrm{O})_6]^{3+}
[
Al
(
H
2
​
O
)
6
​
]
3
+
ion is
s
p
3
d
2
\mathrm{sp}^3 d^2
sp
3
d
2
.
Choose the correct answer from the options given below :
[5 Apr 2024 Shift 2]
(C) and (E) only
(A), (C) and (E) only
(A), (B), (C) and (E) only
(A) and (C) only
Validate
Solution:
A. size order
T
â„“
>
I
n
>
A
l
∣
>
G
a
>
B
\mathrm{T}\ell > \mathrm{In} > \mathrm{Al} \mid > \mathrm{Ga} > \mathrm{B}
T
â„“
>
In
>
Al
∣>
Ga
>
B
B. Electronegativity order
B
>
A
l
<
G
a
<
I
n
<
T
â„“
\mathrm{B} > \mathrm{Al} < \mathrm{Ga} < \mathrm{In} < \mathrm{T}\ell
B
>
Al
<
Ga
<
In
<
T
â„“
D.
B
,
A
l
\mathrm{B}, \mathrm{Al}
B
,
Al
are more stable in +3 oxidation state
So, only C, E statements are correct.
© examsnet.com
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