MCQ
Number of angular nodes for 4d orbital is _________ .
- ✓2
- B1
- C3
- D4
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(Relative atomic masses of $Ag$ and $Br$ are $108\, u$ and $80\, u$, respectively).

$(1)$ $\frac{3}{2} O _2( g ) \rightarrow O _3$ $(g)$
$(2)$ $\frac{1}{8} S _8( s )+ O _2( g ) \rightarrow SO _2( g )$
$(3)$ $2 H _2( g )+ O _2( g ) \rightarrow 2 H _2 O (l)$
$(4)$ $2 C ( g )+3 H _2( g ) \rightarrow C _2 H _6( g )$