MCQ
Borax has the molecular formula
- A$Na_2[B_4O_3(OH)_4].6H_2O$
- B$Na_2[B_4O_5(OH)_4].6H_2O$
- ✓$Na_2[B_4O_5(OH)_4].8H_2O$
- D$Na_2[B_4O_6(OH)_2].8H_2O$
Formula of borax is $Na _2\left[ B _4 O _5( OH )_4\right] \cdot 8 H _2 O$.
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Reason : Half-filled s orbital has greater stability.
$(A)$ $n=4,1=1$ $(B)$ $\mathrm{n}=4,1=2$ $(C)$ $\mathrm{n}=3,1=1$ $(D)$ $\mathrm{n}=3,1=2$ $(E)$ $n=4,1=0$
Choose the correct answer from the options given below:
$2{X_2}\left( s \right) + 3{Y^{ + 2}}\left( {aq} \right) \to 2X_2^{3 + }\left( {aq} \right) + 3Y\left( s \right)$