MCQ
Element not showing variable oxidation state is :
- ABromine
- BIodine
- CChlorine
- ✓Fluorine
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Statement $I :$ In 'Lassaigne's Test, when both nitrogen and sulphur are present in an organic compound, sodium thiocyanate is formed.
Statement $II :$ If both nitrogen and sulphur are present in an organic compound, then the excess of sodium used in sodium fusion will decompose the sodium thiocyanate formed to give $NaCN$ and $Na _{2} S$.
In the light of the above statements, choose the most appropriate answer from the options given below...

$(a)\, \Delta U = 0$
$(b)\, q = 0$
$(c)\, \Delta T = 0$
$(d)\,q = 2.303\,nRT\,{\log _{10}}\,\left( {\frac{{{V_2}}}{{{V_1}}}} \right)$


$2s$ $2{p_x}$ $2{p_y}$ $2{p_z}$