Explain the limitations of valence bound theory. - Vidyadip

Question

Explain the limitations of valence bound theory.

✓

Answer

self

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "5 Marks Questions" from Coordination Compounds→Coordination Compounds — all question types→Chemistry STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

i. Tert$-$Butylamine cannot be prepared by the action of $NH_3$ on tert$-$butyl bromic. Explain why?
ii. Suggest a convenient method for the preparation of tert$-$butylamine.

Match the complex species given in Column $I$ with the possible isomerism given in Column $II$ and assign the correct code:

	Column $I ($Complex species$)$		Column $II ($Isomerism$)$
$a.$	$[Co(NH_3)_4C_{l2}]^+$	$1.$	Optical
$b.$	$cis-[Co(en)_2Cl_2]^+$	$2.$	Ionisation
$c.$	$[Co(NH_3)_5 (NO_2)]Cl_2$	$3.$	Coordination
$d.$	$[Co(NH_3)_6][Cr(CN)_6]$	$4.$	Geometrical
		$5.$	Linkage

Draw the structure of $[Co(NH_{3})_{6}]^{3+}$ and $[Ni(CO)_{4}]$. Write the hybridisation of atomic orbital of transition metal in each case.

Account for the following:
Write one similarity and one difference between the chemistry of lanthanoid and actinoid elements.
Transition metals form large number of complex compounds.
The lowest oxide of transition metal is basic whereas the highest oxide is amphoteric or acidic.
$E^\circ$ value for the $Mn^{3+}/Mn^{2+}$ couple is highly positive $(+1.57 V)$ as compare to $Cr^{3+}/Cr^{2+}. 56/1/1 9.$

Match the solutions given in Column $I$ and the colours given in Column $II.$

	Column $I ($Aqueous solution of salt$)$		Column $II($Colour$)$
$(i)$	$\ce{FeSO_4.7H_2O}$	$(a)$	Green
$(ii)$	$\ce{NiCl_2.4H_2O}$	$(b)$	Light pink
$(iii)$	$\ce{MnCl_2.4H_2O}$	$(c)$	Blue
$(iv)$	$\ce{CoCl_2.6H_2O}$	$(d)$	Pale green
$(v)$	$\ce{Cu_2Cl_2}$	$(e)$	Pink
		$(f)$	Colourless

For an elementary reaction$:$
$2A + B \rightarrow 3C$
the rate of appearance of $C$ at time $'t\ ’$ is $1.3 \times 10-^4 \ce{mol L-^1 s-^1.}$ Calculate at this time$:$

Rate of the reaction.
Rate of disappearance of $A.$

Match the properties given in Column $I$ with the metals given in Column $II.$

	Column $I ($Property$)$		Column $II ($Metal$)$
$(i)$	Element with highest second ionisation enthalpy	$(a)$	$Co$
$(ii)$	Element with highest third ionisation enthalpy	$(b)$	$Cr$
$(iii)$	$M$ in $M (CO)6$ is	$(c)$	$Cu$
$(iv)$	Element with highest heat of atomisation	$(d)$	$Zn$
		$(e)$	$Ni$

Match the items of Column I and Column II.

	Column I		Column II
(i)	Mathematical expression for rate of reaction.	(a)	Rate constant.
(ii)	Rate of reaction for zero order reaction is equal to.	(b)	Rate law.
(iii)	Units of rate constant for zero order reaction is same as that of.	(c)	Oder of slowest step.
(iv)	Order of a complex reaction is determined by.	(d)	Rate of a reaction.

Complete the following chemical equations:

$\text{Cr}_{2}\text{O}_{7}^{2-}\text{(aq)}+\text{H}_{2}\text{S}\text{(g)}+\text{H}^{+}\text{(aq)}\rightarrow$
$\text{Cu}^{2+}\text{(aq)}+\text{I}^{-}\text{(aq)}\rightarrow$

How would you account for the following:

The oxidising power of oxoanions are in the order $VO^+_2 < Cr_2O^{2–}_7 –_4.$
The third ionisation enthalpy of manganese $(Z = 25)$ is exceptionally high.
$Cr^{2+}$ is a stronger reducing agent than $Fe^{2+}.$

Answer the following questions:Account for the following$:$

Methylamine in water reacts with ferric chloride to precipitate hydrated ferric oxide.
Diazonium salts of aromatic amines are more stable than those of aliphatic amines.