Which option is not matched in correct sequence:

Question

Which option is not matched in correct sequence: (A) d5,d3,d1,d4 arrow increasing magnetic moment (B) MO,M2O3,MO2,M2O5 arrow decreasing basic strength (C) Sc,V,Cr,Mn arrow increasing number of oxidation state (D) Co2 +,Fe+ 3,Cr+ 3,Sc+ 3 arrow increasing stability of ions

Tardigrade Admin · Accepted Answer

A. As Increasing order of magnetic moment will be

d^{1}, d^{3}, d^{4}, d^{5}

so this one is not correct. Magnetic moment is more for more number of unpaired electrons.
B. As the oxidation state of metal increases, acidic strength increases so, this one is correctly matched.
C. Mn has the highest oxidation state of +7
Half-filled and full-filled sub-orbits are extra stable.

Q. Which option is not matched in correct sequence:

$d^{5}, d^{3}, d^{1}, d^{4} \to$ increasing magnetic moment

$MO, M_{2} O_{3}, M O_{2}, M_{2} O_{5} \to$ decreasing basic strength

$S c, V, C r, M n$ $\to$ increasing number of oxidation state

$C o^{2 +}, F e^{+ 3}, C r^{+ 3}, S c^{+ 3} \to$ increasing stability of ions

Q. Which option is not matched in correct sequence:

d5,d3,d1,d4→ increasing magnetic moment

MO,M2​O3​,MO2​,M2​O5​→ decreasing basic strength

Sc,V,Cr,Mn → increasing number of oxidation state

Co2+,Fe+3,Cr+3,Sc+3→ increasing stability of ions

$d^{5}, d^{3}, d^{1}, d^{4} \to$ increasing magnetic moment

$MO, M_{2} O_{3}, M O_{2}, M_{2} O_{5} \to$ decreasing basic strength

$S c, V, C r, M n$ $\to$ increasing number of oxidation state

$C o^{2 +}, F e^{+ 3}, C r^{+ 3}, S c^{+ 3} \to$ increasing stability of ions