The 'spin only' magnetic moment value of MO_4 | vedclass

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

Question

(A) The metallic radii of the given elements generally decrease across the period due to increasing effective nuclear charge,but $Zn$ has a larger rad

Vedclass · Accepted Answer

$0$

Vedclass · Answer

(A) The metallic radii of the given elements generally decrease across the period due to increasing effective nuclear charge,but $Zn$ has a larger radius due to metallic bonding characteristics. Among the transition metals $Sc$ to $Mn$,the atomic radius decreases. However,the question asks for the least metallic radii among the listed elements. $Cr$ has a smaller radius than $Sc, Ti, V$ and $Mn$.In $CrO_4^{2-}$,the oxidation state of $Cr$ is $x + 4(-2) = -2$,so $x = +6$.The electronic configuration of $Cr$ is $[Ar] 3d^5 4s^1$.The electronic configuration of $Cr^{6+}$ is $[Ar] 3d^0$.Since there are no unpaired electrons $(n=0)$,the spin-only magnetic moment $\mu = \sqrt{n(n+2)} = \sqrt{0(0+2)} = 0 \ BM$.

Complex	Magnetic Moment $(BM)$
$K_4[Mn(CN)_6]$	$2.2$
$[Fe(H_2O)_6]^{2+}$	$5.3$
$K_2[MnCl_4]$	$5.9$

The 'spin only' magnetic moment value of $MO_4^{2-}$ is . . . . . $BM$. (Where $M$ is a metal having least metallic radii among $Sc, Ti, V, Cr, Mn$ and $Zn$).
(Given atomic number: $Sc=21, Ti=22, V=23, Cr=24, Mn=25$ and $Zn=30$)

Similar Questions

How many geometrical isomers are possible in the following coordination entities?
$(i)$ $[Cr(C_2O_4)_3]^{3-}$
$(ii)$ $[Co(NH_3)_3Cl_3]$

The possible number of stereoisomers for $[Co(en)_2Cl_2]^+$ is

Which of the following are paramagnetic?
$A$. $[NiCl_4]^{2-}$
$B$. $Ni(CO)_4$
$C$. $[Ni(CN)_4]^{2-}$
$D$. $[Ni(H_2O)_6]^{2+}$
$E$. $Ni(PPh_3)_4$
Choose the correct answer from the options given below:

What can be inferred from the magnetic moment values of the following complex species?

Complex Magnetic Moment $(BM)$

$K_4[Mn(CN)_6]$ $2.2$

$[Fe(H_2O)_6]^{2+}$ $5.3$

$K_2[MnCl_4]$ $5.9$

The number of isomers of $[Co(dien)Cl_3]$ is

Vedclass Test Series

Exam Paper Generator

Online Exam Module

The 'spin only' magnetic moment value of $MO_4^{2-}$ is . . . . . $BM$. (Where $M$ is a metal having least metallic radii among $Sc, Ti, V, Cr, Mn$ and $Zn$).(Given atomic number: $Sc=21, Ti=22, V=23, Cr=24, Mn=25$ and $Zn=30$)