Anionic Radius

Q. Which one of the following is the smallest in size?

1. $F^{-}$
2. $N^{3-}$
3. $N{a}^{+}$
4. $O^{2-}$

Q. The ionic radii (in $A^{\circ }$) of $N^{3-}$, $O^{2-}$ and $F^{-}$ are respectively:

1. $1.71,1.40,and1.36$
2. $1.71,1.36,and1.40$
3. $1.36,1.40,and1.71$
4. $1.36,1.71,and1.40$

Q. Which of the following statements regarding group $16$ elements is not true?

1. The electronic configuration of oxygen is $\left[He\right]2s^{2}2p^4$
2. The electronic configuration of sulphur is $\left[Ne\right]3s^{2}3p^4$
3. The atomic radii of the elements of group $16$ is larger than those of the corresponding elements of group $15$
4. The electronic configuration of tellurium is $\left[Kr\right]4d^{10}5s^{2}5p^4$

Q. The ionic radii of $O^{2-},F^{-},N{a}^{+}\text{and}M{g}^{2+}$ are in the order :

1. $O^{2-}>F^{-}>N{a}^{+}>M{g}^{2+}$
2. $F^{-}>O^{2-}>N{a}^{+}>M{g}^{2+}$
3. $O^{2-}>F^{-}>M{g}^{2+}>N{a}^{+}$
4. $M{g}^{2+}>N{a}^{+}>F^{-}>O^{2-}$

Q.

Ionic radii vary in
(a) inverse proportion to the effective nuclear charge
(b) Inverse proportion to the square of effective nuclear charge
(c) direct proportion to the screening effect
(d) direct proportion to the square of screening effect

Q. The correct order of increasing ionic radius for $F^{-},N{a}^{+},S^{2-},C{l}^{-}$ and $K^{+}$ is:

1. $F^{-}<N{a}^{+}<S^{2-}\approx C{l}^{-}<K^{+}$
2. $N{a}^{+}<K^{+}<F^{-}<C{l}^{-}\approx S^{2-}$
3. $N{a}^{+}<F^{-}\approx K^{+}<C{l}^{-}<S^{2-}$
4. $N{a}^{+}\approx F^{-}<C{l}^{-}<S^{2-}<K^{+}$

Q. Which of the following compounds has the minimum cation to anion size ratio?

1. $CsF$
2. $LiI$
3. $LiF$
4. $CsI$

Q. 35.which metal ion is likely to form a square planar Complex Ion with CN - Cu+ Ag+ Ni+2 Zn+2

Q. The hydration energy of $M{g}^{2+}$ is larger than that of (J1984, 1M)

1. $A{l}^{3+}$
2. $N{a}^{+}$
3. $B{e}^{2+}$
4. $M{g}^{3+}$

Q. Arrange $N{a}^{+},M{G}^{2+},O^{2-},F^{-}A{l}^{3+},N^{3-}$ (each having 10 electrons) in increasing ionic radii.

1. $A{l}^{3+}<M{g}^{2+}<N{a}^{+}<F^{-}<O^{2-}<N^{3-}$
2. $N^{3-}<O^2<F^{-}<N{a}^{+}<M{g}^{2+}<A{l}^{3+}$
3. $A{l}^{3+}<M{g}^{2+}<F^{-}<N{a}^{+}<O^{2-}<N^{3-}$
4. None of these

Q. Which of the following compounds has the minimum cation to anion size ratio?

1. $CsF$
2. $LiI$
3. $LiF$
4. $CsI$

Q. The ionic carbide is

1. 
2. 
3. 
4. 

Q. Write the electronic configuration of fluoride ion.

Q. Which of the following species can act as the strongest base?

1. 
2. $R{O}^{-}$
3. $H{O}^{-}$
4. $C_6{H}_5{O}^{-}$

Q. The correct order of radii is

1. N < Be < B
2. $F^{-}<O^{2-}<N^{3-}$
3. Na < Li < K
4. $F{e}^{3+}<F{e}^{2+}<F{e}^{4+}$

Q. In a group I of the periodic table, three elements $X,Y,andZ$ have ionic radii 1.33 $A^0$ , 0.95 $A^0$, and 0.60 $A^0$ respectively. Giving a reason, arrange them in the order of increasing atomic numbers in the group.

Q. The ionic radii (in $A^{\circ }$) of $N^{3-}$, $O^{2-}$ and $F^{-}$ are respectively:

1. $1.71,1.40,and1.36$
2. $1.71,1.36,and1.40$
3. $1.36,1.40,and1.71$
4. $1.36,1.71,and1.40$

Q.

Match list-I with list-II and select the correct answer using the codes given below -

List-I List-II

Ion Radius (in pm)

(I) $L{i}^{+}$ (a) 216

(II) $N{a}^{+}$ (b) 195

(III) $B{r}^{-}$ (c) 60

(IV) $I^{-}$ (d) 95

1. ic, iid, iiib, iva

2. id, iic, iiib, iva

3. Ia, IIb, IIId, IVc

4. ib, iic, iiia, ivd

Q. On the basis of Quantum numbers justify that sixth period of the periodic table should have 32 elements?

Q. When $1F$ of electricity is passed through acidulated water, $O_2$ evolved is:

1. $5.6{dm}^3$
2. $11.2{dm}^3$
3. $1.0{dm}^3$
4. $22.4{dm}^3$

Q. The ions $O^{2–},F^{–},N{a}^{+},M{g}^{2+}$ and $A{l}^{3+}$ are isoelectronic. Their ionic radii show:

1. An increase from $O^{2–}$ to $F^{–}$ and then decrease from $N{a}^{+}$ to $A{l}^{3+}$
2. A significant decrease from $O^{2–}$ to $A{l}^{3+}$
3. A significant increase from $O^{2–}$ to $A{l}^{3+}$
4. A decrease from $O^{2–}$ to $F^{–}$ and then increase from $N{a}^{+}$ to$A{l}^{3+}$

Q. The correct order of radii is

1. N < Be < B
2. $F^{-}<O^{2-}<N^{3-}$
3. Na < Li < K
4. $F{e}^{3+}<F{e}^{2+}<F{e}^{4+}$

Q.

The correct order of radii is

1. $F{e}^{++}>F{e}^{3+}>F{e}^{2+}$

2. Be> N>B

3. $N^{3\ominus }>O^{2\ominus }>F^{\ominus }$

4. Na>Li>K

Q.

The ionic radii (in $A^{\circ }$ of $N^3,O^{2-}and{F}^{-}$ ) respectively are

1. 1.36, 1.40 and 1.71

2. 1.36, 1.71 and 1.40

3. 1.71, 1.36 and 1.40

4. 1.71, 1.40 and 1.36

Q. Among the following which one has the highest cation to anion size ratio ?

1. $CsI$
2. $CsF$
3. $NaF$
4. $LiF$

Q. The molar conductance of ${}^{NaCl,HCl}\text{and}{}^{C{H}_{3}COONa}$ at infinite dilution are ${}^{126.45,426.16}\text{and}{}^{91.0Sc{m}^{2}mo{l}^{-1}}$ respectively. The molar conductance of ${}^{C{H}_{3}COOH}$ at infinite dilution is. Choose the right option for your answer.

1. $540.48c{m}^{2}mo{l}^{-1}$
2. $201.28Sc{m}^{2}mo{l}^{-1}$
3. $698.28Sc{m}^{2}mo{l}^{-1}$
4. $390.71Sc{m}^{2}mo{l}^{-1}$

Q. Q.xliv. In $Ca{F}_2$ crystal $C{a}^{2+}$ ion are present fcc arrangement. Calculate the number of $F^{-}$ ion in the unit cell:

Q. Which one of the following molecules is/are expected to exhibit diamagnetic behaviour?

1. $C_2$
2. $N_2$
3. $O_2$
4. $S_2$

Q. Which of the following elements does not belong to the same period?
${}_8^{16}\text{P}{,}_9^{19}\text{Q}{,}_{10}^{20}\text{R}and{}_{11}^{23}\text{S}$

1. ${}_8^{16}\text{P}$
2. ${}_9^{19}\text{Q}$
3. ${}_{10}^{20}\text{R}$
4. ${}_{11}^{23}\text{S}$

Q. The hydration energy of $M{g}^{2+}$ is larger than that of (J1984, 1M)

1. $A{l}^{3+}$
2. $N{a}^{+}$
3. $B{e}^{2+}$
4. $M{g}^{3+}$