VBT Tetrahedral vs Square Planar

Q. 30. An element crystallizes in a BCC lattice nearest neighbours and next nearest neighbours of the elements are respectively 1) 8, 8 2)8, 6 3)6, 8 4)6, 6

Q.

An aqueous solution of metal ion M1 reacts separately with reagents Q and R in excess to give tetrahedral and square planar complexes, respectively. An aqueous solution of another metal ion M2 always forms tetrahedral complexes with these reagents. Aqueous solution of M2 on reactionn with reagent S gives white precipitate which dissolves in excess of S. The reactions are summarised in the scheme given below:
SCHEME:

Reagent S is

1. $K_4\left[Fe\right(CN{)}_6]$

2. $N{a}_{2}HP{O}_4$

3. $K_{2}Cr{O}_4$

4. $KOH$

Q.

This question and the next one appeared in the in the linked comprehension format. Let's give them a shot.

An aqueous solution of metal ion M1 reacts separately with reagents Q and R in excess to give tetrahedral and square planar complexes, respectively. An aqueous solution of another metal ion M2 always forms tetrahedral complexes with these reagents. Aqueous solution of M2 on reaction with reagent S gives white precipitate which dissolves in excess of S. The reactions are summarised in the scheme given below:
SCHEME:

M1, Q and R, respectively are

1. $Z{n}^{2+},KCNandHCl$

2. $N{i}^{2+},HClandKCN$

3. $C{d}^{2+},KCNandHCl$

4. $C{o}^{2+},HClandKCN$

Q. Which of the following has square planar structure?

1. $[NiC{l}_4{]}^{2\ominus }$
2. $\left[Ni\right(CO{)}_4]$
3. $\left[Ni\right(CN{)}_4{]}^{2\ominus }$
4. $\left[Cd\right(CN{)}_4{]}^{2\ominus }$

Q. Considering $H_{2}O$ as a weak ligand, the number of unpaired electrons in $\left[Mn\right(H_{2}O{)}_6{]}^{2+}$ would be

1. 4
2. 5
3. 2
4. 3

Q.

in hydrogen spectrum how many shells are yet discovered

Q.

The geometries of the ammonia complexes of $N{i}^{2+},P{t}^{2+}andZ{n}^{2+},$ respcetively, are

1. octahedral, square planar and tetrahedral

2. square planar, octahedral and tetrahedral
   

3. tetrahedral, square planar and octahedral

4. octahedral, tetrahedral and square planar

Q. 10. If the unit cell mineral has ccp array of oxygen atoms with m fraction of octahedral holes occupied by aluminium ion and n fraction of tetrahedral holes occupied by magnesium ion, m and n respectively are 1.) 1/2, 1/8 2.) 1, 1/4 3.)1/2, 1/2 4.) 1/4, 1/8