D block Flashcards
1
Q
No of f electrons in Lanthanoids
A
Ce 1 Pr 3 Nd 4 Pm 5 Sm 6 Eu 7 Gd 7 Tb 9 Dy 10 Ho 11 Er 12 Tm 13 Yb 14 Lu 14
2
Q
Density order
A
Sc < Ti < V
3
Q
Electrode potential depends on which 3 factors
A
Sublimation enthalpy
Ionization Enthalpy
Hydration enthalpy
4
Q
Cu2+ has +ve reduction potential due to
A
High atomization enthalpy
5
Q
Ni2+ has very negative electrode potential due to
A
Very negative hydration enthalpy
6
Q
CrO
A
basic
7
Q
VO
A
basic
8
Q
Mn2O7
A
acidic
9
Q
CrO3
A
acidic
10
Q
V2O3
A
Basic
11
Q
V2O5
A
Amphoteric(slightly acidic)
12
Q
MnO
A
basic
13
Q
Cr2O3
A
amphoteric
14
Q
CrO3
A
acidic
15
Q
MnO2
A
amphoteric
