P Block Group 13 (Boron Family) Notes, Properties & Reactions

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Topic Question Set

Q 1 :

Consider the following reactions

${Na}_{2} B_{4} O_{7} \overset{Δ}{\to} 2 X + Y$

${CuSO}_{4} + Y \overset{Non-luminous flame}{\to} Z + {SO}_{3}$

$2 Z + 2 X + Carbon \overset{Luminous flame}{\to} 2 Q + {Na}_{2} B_{4} O_{7} + CO$

The oxidation states of Cu in Z and Q, respectively are: [2026]

+2 and +2
+1 and +1
+2 and +1
+1 and +2

1

2

3

4

(3)

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