MCQ
Kossel and Lewis approach was based on the:
- AReactivity of elements.
- BInertness of noble gases.
- CReactivity of metals.
- DInertness of non-metals.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$(1)$ $\frac{3}{2} O _2( g ) \rightarrow O _3$ $(g)$
$(2)$ $\frac{1}{8} S _8( s )+ O _2( g ) \rightarrow SO _2( g )$
$(3)$ $2 H _2( g )+ O _2( g ) \rightarrow 2 H _2 O (l)$
$(4)$ $2 C ( g )+3 H _2( g ) \rightarrow C _2 H _6( g )$
If the oxidation number of metal in the salt was $3$, what would be the new oxidation number of metal ?