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Tardigrade
Question
Chemistry
The ionic radii (in Å) of N3-,O2- and F- respectively are
Q. The ionic radii (in
A
˚
) of
N
3
−
,
O
2
−
and
F
−
respectively are
8428
215
JEE Main
JEE Main 2015
Classification of Elements and Periodicity in Properties
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A
1.36, 1.40 and 1.71
19%
B
1.36, 1.71 and 1.40
12%
C
1.71, 1.40 and 1.36
61%
D
1.71, 1.36 and 1.40
8%
Solution:
size decreasing
⟶
N
3
−
,
O
2
−
,
F
−
z/e increases so size
↓
So
N
3
−
has longest radii imporve to
O
2
−
SO
1.71
>
1.40
>
1.36