MCQ
Which of the elements listed below occurs in allotropic forms
- AIodine
- BCopper
- ✓Sulphur
- DSilver
$(1)$ Monoclinic
$(2)$ Rhombic
$(3)$ Plastic
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$4M + 8CN^-+ 2H_2O + O_2 \rightarrow 4[M(CN)_2]^-+ 4OH^-$
$2[M(CN)_2]^-+ Zn \rightarrow [Zn(CN)_4]^{2-} + 2M$

[Use : $\ln\, 2=0.69, \ln \,10=2.3]$