From the given sets of quantum numbers, the one that is inconsistent with the theory is
n =3; l =2; m = -3; s = +
n = 4; l = 3; m = 3; s = +
n = 2; l = 1; m = 0; s = -
n = 4; l = 3; m = 2; s = +
Pick out the isoelectronic structures from the following
I and II
I and IV
I and III
II, III and IV
XeF4 has a shape of
spherical
trigonal bipyramidal
square planar
tetrahedral
C.
square planar
XeF4 = 4 bp + 2 lp = sp3d2 hybridisation
Thus, the structure of XeF4 should be octahedral but its geometry becomes square planar due to the presence of two lone pairs of electrons as
1f 20 mL of 0.4 N NaOH solution completely neutralises 40 mL of a dibasic acid, the molarity of the acid solution is
0.1 M
0.2 M
0.3 M
0.4 M
In the following particle
3Li6 + ? → 2He4 + 1H3
the missing particle is
electron
neutron
proton
deuteron
Consider the two gaseous equilibria involving SO2 and the corresponding equilibrium constants at 298 K
SO2 (g) + O2 (g) SO3 (g); K1
2SO3 (g) 2SO2 (g) + O2 (g); K2
The values of the equilibrium constants are related by
K2 = K1
K2 = K
K2 =
K2 =
For the reaction,
A + B C + D,
the initial concentrations of A and B are equal. The equilibrium concentration of C is two times the equilibrium concentration of A. The equilibrium constant is
4
9