Which of the following forms stable +4 oxidation state? - Vidyadip

MCQ

Which of the following forms stable $+4$ oxidation state?

A
$La (Z\, = 57)$
B
$Eu (Z\, = 63)$
✓
$Ce (Z = 58)$
D
$Gd (Z= 64)$

✓

Answer

Correct option: C.

$Ce (Z = 58)$

c
Only $Ce(Z\, = 58)$ shows stable $(+4)$ oxidation state

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

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Transitional elements are named transition elements because their characters are

Which of the following graph is incorrect for first order reaction?

In following reaction $3A \to B+2C,$ the initial concentration of $A$ is $8\,mol/lit,$ after $10\,min$ it becomes $5\,mol/lit$ then find the rate of reaction ........ $mol\,L^{-1}\,min^{-1}$

$Cl_2(aq) + H_2S(aq) \to S(s) + 2H^+(aq) + 2Cl^-(aq)$ rate law is $r = K[Cl_2][H_2S]$
then which of these mechanism is/are consistent with this rate law

$(A)\, H_2S \rightleftharpoons H^+ + HS^-$ (fast)

$Cl_2 + HS^-\to 2Cl^-+ H^+ + S$ (slow)

$(B)\, Cl_2 + H_2S \to H^+ + Cl^-+ Cl^+ + HS^-$ (slow)

$Cl^+ + HS^-\to H^+ + Cl^-+ S$ (fast)

Total number of stereoisomers of the $1,3$ -dichlorocyclohexane is

In a balanced equation ${H_2}S{O_4} + x\,HI \to {H_2}S + y\,{I_2} + z\,{H_2}O$, the values of $ x, y, z$ are

$5\ moles$ each of hydrogen and iodine were heated in a sealed $10\ litre$ vessel. At equilibrium, $2\ moles$ of $HI$ were found. The equilibrium constant for the reaction

${H_2}(g)\, + \,{I_2}(g)\, \rightleftharpoons \,2HI(g)$ is

Which of the following is a redox-reaction ?

The $ IUPAC$ name of the complex $\left[ {Pt{{\left( {N{H_3}} \right)}_2}C{l_2}} \right]$ is

The $IUPAC$ name of $C{H_3} - \mathop {\mathop {CH}\limits_{|\,\,\,\,} }\limits_{OH} - C{H_2} - \mathop {\mathop {CH}\limits_{|\,\,\,\,} }\limits_{C{H_3}} - CHO$ will be