MCQ
Which of the following sequence represents atomic number of only representative elements?
- A$55, 12, 48, 53$
- B$13, 33, 54, 83$
- ✓$3, 33, 53, 87$
- D$22, 33, 55, 66$
Sequence $C$ option contains only representative elements.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Assertion $(A)$: Among group $13$ elements, boron's melting point is unusually high $(2453 \mathrm{~K})$.
Reason $(R):$ Solid boron has a strong crystalline lattice.
In the context of the above statements, choose the correct answer from the following options:

$F{e^{3 + }}(aq) + {e^ - } \to F{e^{ - 1}}(aq);\,{E^o} = + 0.77\,V$
$A{l^{3 + }}(aq) + 3{e^ - } \to Al(s);\,{E^o} = - 1.66\,V$
$B{r_2}(aq) + 2{e^ - } \to 2B{r^ - }(aq);\,{E^o} = + 1.08\,V$
Based on the data given above, reducing power of $F{e^{2 + }},\,Al$ and $B{r^ - }$ will increase in the order