MCQ
For a $p -$ block element, its $3d, 3s, 3p$ and $4s$ orbitals are completely filled and the differentiating electron goes to the $4p$ orbital. The element should have its atomic number in the range
- A$13 - 18$
- B$21 - 26$
- ✓$31 - 36$
- D$49 - 54$
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$b. NH_3 < PH_3 < AsH_3$ Reducing power
$c. NI_3 > NBr_3 > NCl_3$ Lewis basic character
$d. N_2O_5 > P_2O_5 > As_2O_5$ Acidic character
Correct order is
$(A)$ It has two geometrical isomers
$(B)$ It will have three geometrical isomers if bidentate 'en' is replaced by two cyanide ligands
$(C)$ It is paramagnetic
$(D)$ It absorbs light at longer wavelength as compared to $\left[ Co ( en )\left( NH _3\right)_4\right]^{3+}$
