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JEEMAIN and NEET
>>
Chemistry
>>
Classification of Elements and Periodicity in Properties
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Q)
Which of the following order is wrong ?
(
a
)
N
H
3
<
P
H
3
<
A
S
H
3
−
a
c
i
d
i
c
(
b
)
L
i
<
B
e
<
B
<
C
−
(
I
E
)
,
(
c
)
A
l
2
O
3
>
M
g
O
<
N
a
2
O
<
K
2
O
(
d
)
L
i
+
<
N
a
+
<
K
+
−
C
o
s
+
−
i
o
n
i
c
v
a
l
u
e
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