Anionic Radius

Q.

Which one of the following is the smallest in size?

1. 

2. 

3. 

4. 

Q.

Which of the following ion has the greatest radius?

1. H^-

2. Br^-

3. F^-

4. I^-

Q.

Which of the following orders of ionic radii is correctly represented?

1. $H^{-}>H^{+}>H$

2. $A{l}^{3+}>M{g}^{2+}>N^{3-}$

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

4. $0^{2-}>F^{-}>N{a}^{+}$

Q.

The radii of $F,F^{-},O$ and $O^{2-}$ are in the order of

1. O^2->F^->O>F

2. O^2->F^->F>O

3. F^->O^2->F>O

4. O^2->O>F^->F

Q. The correct order of radii is

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

Q.

The correct order of radii is

1. Be> N>B

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

3. Na>Li>K

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

Q.

When the following five anions are arranged in order of decreasing ionic radius, the correct sequence is?

1. $S{e}^{2-},I^{-},B{r}^{-},O^{2-},F^{-}$

2. $I^{-},S{e}^{2-},O^{2-},B{r}^{-},F^{-}$

3. $S{e}^{2-},I^{-},B{r}^{-},F^{-},O^{2-}$

4. $I^{-},S{e}^{2-},B{r}^{-},O^{2-},F^{-}$

Q.

Which of the following is the smallest in size?

1. O^2-

2. C^4-

3. F^-

4. N^3-

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. ib, iic, iiia, ivd

2. ic, iid, iiib, iva

3. id, iic, iiib, iva

4. Ia, IIb, IIId, IVc

Q.

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

1. 1.71, 1.36 and 1.40

2. 1.36, 1.40 and 1.71

3. 1.36, 1.71 and 1.40

4. 1.71, 1.40 and 1.36