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p-Block Elements: Groups 15 and 16
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Phosphorus allotropes, phosphine, halides and oxyacids of phosphorus
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Difficulty 1 of 3
pn039
When white phosphorus is boiled with concentrated
NaOH
solution in an inert atmosphere, phosphine is formed along with
A
Na
X
3
PO
X
4
B
Na
X
2
HPO
X
3
C
NaH
X
2
PO
X
2
D
NaPO
X
3
Answer: C
P
X
4
+
3
NaOH
+
3
H
X
2
O
PH
X
3
+
3
NaH
X
2
PO
X
2
. Phosphorus disproportionates: from 0 to -3 in
PH
X
3
and to +1 in sodium hypophosphite.
Practice p-Block Elements: Groups 15 and 16
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