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p-Block Elements: Groups 13 and 14
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Silicon compounds: silicates, silicones, zeolites
JEE Main level
Single correct option
Difficulty 2 of 3
pb153
The anion of a single-chain silicate (each tetrahedron shares two corners) has the general formula
A
(
SiO
X
3
)
X
n
X
2
n
−
B
(
Si
X
2
O
X
5
)
X
n
X
2
n
−
C
(
SiO
X
4
)
X
n
X
4
n
−
D
(
Si
X
2
O
X
7
)
X
n
X
6
n
−
Answer: A
Each Si has 2 terminal O (one negative charge each) and 2 shared O (1 net O):
SiO
X
3
unit with charge
+
4
−
6
=
−
2
, so
(
SiO
X
3
)
X
n
X
2
n
−
.
Practice p-Block Elements: Groups 13 and 14
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