In chromyl chloride,the number of d-electrons | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The formula for chromyl chloride is $CrO_2Cl_2$.In $CrO_2Cl_2$,the oxidation state of $Cr$ is calculated as: $x + 2(-2) + 2(-1) = 0$,which gives $

Vedclass · Accepted Answer

$Mn(VII)$

Vedclass · Answer

(D) The formula for chromyl chloride is $CrO_2Cl_2$.In $CrO_2Cl_2$,the oxidation state of $Cr$ is calculated as: $x + 2(-2) + 2(-1) = 0$,which gives $x = +6$.The electronic configuration of $Cr$ $(Z=24)$ is $[Ar] 3d^5 4s^1$. Thus,$Cr(VI)$ is $[Ar] 3d^0$.Now,let us check the $d$-electron count for the options:$Ti(III)$ $(Z=22)$: $[Ar] 3d^1$$Fe(III)$ $(Z=26)$: $[Ar] 3d^5$$V(IV)$ $(Z=23)$: $[Ar] 3d^1$$Mn(VII)$ $(Z=25)$: $[Ar] 3d^0$Since $Cr(VI)$ and $Mn(VII)$ both have $0$ $d$-electrons,the correct option is $D$.

List-$I$	List-$II$
$(1)$ $Ti^+$	$(A)$ $(n-1)d^4ns^2$
$(2)$ $_{30}Zn$	$(B)$ $(n-1)d^{10}ns^1$
$(3)$ $_{24}Cr$	$(C)$ $(n-1)d^2ns^0$
$(4)$ $_{29}Cu$	$(D)$ $(n-1)d^5ns^1$
	$(E)$ $(n-1)d^0ns^2$
	$(F)$ $(n-1)d^{10}ns^2$

In chromyl chloride,the number of $d$-electrons present on chromium is same as in (Given atomic number of $Ti = 22, V = 23, Cr = 24, Mn = 25, Fe = 26$)

Similar Questions

Which of the following types of metals make the most efficient catalysts?

The electronic configuration of $Cr^{3+}$ is

Properties common to the elements manganese,iron,cobalt,nickel,and copper include the ready formation by them all of:
$I$. Coloured ions in aqueous solution
$II$. Oxides of nitrogen are formed on reaction with concentrated $HNO_3$
$III$. Chlorides of formula $MCl_2$ and $MCl_3$

Which of the following compounds is colourless?

Match the elements in List-$I$ with their electronic configurations in List-$II$.

List-$I$ List-$II$

$(1)$ $Ti^+$ $(A)$ $(n-1)d^4ns^2$

$(2)$ $_{30}Zn$ $(B)$ $(n-1)d^{10}ns^1$

$(3)$ $_{24}Cr$ $(C)$ $(n-1)d^2ns^0$

$(4)$ $_{29}Cu$ $(D)$ $(n-1)d^5ns^1$

$(E)$ $(n-1)d^0ns^2$

$(F)$ $(n-1)d^{10}ns^2$

Vedclass Test Series

Exam Paper Generator

Online Exam Module