For the first row transition metals the ${E^\Theta }$ values are:
${E^\Theta }$
$V$
$Cr$
$Mn$
$Fe$
$Co$
$Ni$
$Cu$
$\left( {{M^{2 + }}/M} \right)$
$-1.18$
$-0.91$
$-1.18$
$-0.44$
$-0.28$
$-0.25$
$+0.35$
Explain the irregularity in the above values.
For the first row transition metals the ${E^\Theta }$ values are:
| ${E^\Theta }$ | $V$ | $Cr$ | $Mn$ | $Fe$ | $Co$ | $Ni$ | $Cu$ |
| $\left( {{M^{2 + }}/M} \right)$ | $-1.18$ | $-0.91$ | $-1.18$ | $-0.44$ | $-0.28$ | $-0.25$ | $+0.35$ |
Explain the irregularity in the above values.
The ${E^\Theta }\,\left( {{M^{2 + }}/M} \right)$ values are not regular which can be explained from the irregular variation of ionisation enthalpies $\left(\Delta_{1} H_{1}+\Delta_{1} H_{2}\right)$ and also the sublimation enthalpies which are relatively much less for manganese and vanadium.
Similar Questions
Which one of the following has the maximum number of unpaired electrons
Which one of the following has the maximum number of unpaired electrons
Which of the following statements are correct?
$(A)$ The electronic configuration of $Cr$ is $[ Ar ] 3 d ^{5}$ $4 s^{1}$.
$(B)$ The magnetic quantum number may have a negative value.
$(C)$ In the ground state of an atom, the orbitals are filled in order of their increasing energies.
$(D)$ The total number of nodes are given by $n-2$.
Choose the most appropriate answer from the options given below ....
Which of the following statements are correct?
$(A)$ The electronic configuration of $Cr$ is $[ Ar ] 3 d ^{5}$ $4 s^{1}$.
$(B)$ The magnetic quantum number may have a negative value.
$(C)$ In the ground state of an atom, the orbitals are filled in order of their increasing energies.
$(D)$ The total number of nodes are given by $n-2$.
Choose the most appropriate answer from the options given below ....
- [JEE MAIN 2022]
Four successive members of the first row transition elements are listed below with atomic numbers. Which one of them is expected to have the highest $E^o_{M^{3+} /M^{2+}}$ value ?
Four successive members of the first row transition elements are listed below with atomic numbers. Which one of them is expected to have the highest $E^o_{M^{3+} /M^{2+}}$ value ?
- [JEE MAIN 2013]
Which of the following statement is not true
Which of the following statement is not true
Cigarette or gas lighter is made up of
Cigarette or gas lighter is made up of