Given below are two statements, one is labelled as Assertion $A$ and the other is labelled as Reason $R$.
Assertion $A:$ The spin only magnetic moment value for $\left[ Fe ( CN )_6\right]^{3-}$ is $1.74 BM$, whereas for $\left[ Fe \left( H _2 O \right)_6\right]^{3+}$ is $5.92\,BM$.
Reason $R :$ In both complexes, $Fe$ is present in +3 oxidation state.
In the light of the above statements, choose the correct answer from the options given below:
Given below are two statements, one is labelled as Assertion $A$ and the other is labelled as Reason $R$.
Assertion $A:$ The spin only magnetic moment value for $\left[ Fe ( CN )_6\right]^{3-}$ is $1.74 BM$, whereas for $\left[ Fe \left( H _2 O \right)_6\right]^{3+}$ is $5.92\,BM$.
Reason $R :$ In both complexes, $Fe$ is present in +3 oxidation state.
In the light of the above statements, choose the correct answer from the options given below:
- [JEE MAIN 2023]
- A
Both $A$ and $R$ are true but $R$ is NOT the correct explanation of $A$
- B
$A$ is false but $R$ is true
- C
$A$ is true but $R$ is false
- D
Both $A$ and $R$ are true and $R$ is the correct explanation of $A$
Similar Questions
In the ground state of cobalt atom $(Z = 27)$ there are ....... unpaired electrons and thus the atom is.......
In the ground state of cobalt atom $(Z = 27)$ there are ....... unpaired electrons and thus the atom is.......
A substance which is not paramagnetic is
A substance which is not paramagnetic is
A transition metal ' $\mathrm{M}$ ' among $\mathrm{Sc}, \mathrm{Ti}, \mathrm{V}, \mathrm{Cr}, \mathrm{Mn}$ and $\mathrm{Fe}$ has the highest second ionisation enthalpy. The spin only magnetic moment value of $\mathrm{M}^{+}$ion is. . . . . . .$\mathrm{BM}$ (Near integer)
(Given atomic number $\mathrm{Sc}: 21, \mathrm{Ti}: 22, \mathrm{~V}: 23, \mathrm{Cr}$ : $24, \mathrm{Mn}: 25, \mathrm{Fe}: 26)$
A transition metal ' $\mathrm{M}$ ' among $\mathrm{Sc}, \mathrm{Ti}, \mathrm{V}, \mathrm{Cr}, \mathrm{Mn}$ and $\mathrm{Fe}$ has the highest second ionisation enthalpy. The spin only magnetic moment value of $\mathrm{M}^{+}$ion is. . . . . . .$\mathrm{BM}$ (Near integer)
(Given atomic number $\mathrm{Sc}: 21, \mathrm{Ti}: 22, \mathrm{~V}: 23, \mathrm{Cr}$ : $24, \mathrm{Mn}: 25, \mathrm{Fe}: 26)$
- [JEE MAIN 2024]
Match the catalysis (Column$-I$ ) with products (Column $-II$ )
Column $-I$ Catalyst
Column $-II$ >Product
$(a)$ $V_2O_5$
$(i)$ Polyethylene
$(b)$ $TiCl_4/Al(Me)_3$
$(ii)$ Ethanal
$(c)$ $PdCl_2$
$(iii)$ $H_2SO_4$
$(d)$ Iron oxide
$(iv)$ $NH_3$
Match the catalysis (Column$-I$ ) with products (Column $-II$ )
| Column $-I$ Catalyst | Column $-II$ >Product |
| $(a)$ $V_2O_5$ | $(i)$ Polyethylene |
| $(b)$ $TiCl_4/Al(Me)_3$ | $(ii)$ Ethanal |
| $(c)$ $PdCl_2$ | $(iii)$ $H_2SO_4$ |
| $(d)$ Iron oxide | $(iv)$ $NH_3$ |
- [JEE MAIN 2019]
The correct order of decreasing third ionisation enthalpy of $Ti, \,V,\, Cr,\, Mn$ is
The correct order of decreasing third ionisation enthalpy of $Ti, \,V,\, Cr,\, Mn$ is