Hydration Energy (Group 1)

Q. The correct order of mobility of alkali metal ions in aqueous solution is:

1. $R{b}^{+}>K^{+}>N{a}^{+}>L{i}^{+}$
2. $K^{+}>R{b}^{+}>N{a}^{+}>L{i}^{+}$
3. $L{i}^{+}>N{a}^{+}>K^{+}>R{b}^{+}$
4. $N{a}^{+}>K^{+}>R{b}^{+}>L{i}^{+}$

Q. The correct order of hydration enthalpies of alkali metal ions is:

1. $L{i}^{+}>N{a}^{+}>K^{+}>C{s}^{+}>R{b}^{+}$
2. $N{a}^{+}>L{i}^{+}>K^{+}>R{b}^{+}>C{s}^{+}$
3. $L{i}^{+}>N{a}^{+}>K^{+}>R{b}^{+}>C{s}^{+}$
4. $N{a}^{+}>L{i}^{+}>K^{+}>C{s}^{+}>R{b}^{+}$

Q. Dopping of $AgCl$ crystal with $CdC{l}_2$ results in:

1. Schottky defect
2. Frenkel defect
3. Impurity defect
4. Formation of F-centers

Q. Which one of the following alkaline earth metal ions has the highest ionic mobility in its aqueous solution?

1. $M{g}^{2+}$
2. $S{r}^{2+}$
3. $C{a}^{2+}$
4. $B{e}^{2+}$

Q.

All compounds of alkali metals are easily soluble in water but lithium compounds are more soluble in organic solvents. Explain

Q. Q1) What is the hybridisation of central metal ion in \lbrack Fe(CO)4\rbrack-2

Q.

The ease of adsorption of the hydrated alkali metal ions on an ion-exchange resin follows the order:

1. $L{i}^{+}<K^{+}<N{a}^{+}<R{b}^{+}$

2. $R{b}^{+}<K^{+}<N{a}^{+}<L{i}^{+}$

3. $K^{+}<N{a}^{+}<R{b}^{+}<L{i}^{+}$

4. $N{a}^{+}<L{i}^{+}<K^{+}<R{b}^{+}$

Q.

Why Li compounds are soluble in organic solvents?

Q.

ionic species having largest size:

A. Li+(g)

B.Na+ (aq)

C. Rb+(aq)

D. Li+(aq)

Q. The mobility of metal ions in aqueous medium $(L{i}^{\oplus },N{a}^{\oplus },K^{\oplus },R{b}^{\oplus })$ in an electric field, follows the order:

1. $L{i}^{\oplus }>N{a}^{\oplus }>K^{\oplus }>R{b}^{\oplus }$
2. $R{b}^{\oplus }>N{a}^{\oplus }\equiv K^{\oplus }>L{i}^{\oplus }$
3. $L{i}^{\oplus }<N{a}^{\oplus }<K^{\oplus }<R{b}^{\oplus }$
4. $N{a}^{\oplus }\equiv K^{\oplus }>R{b}^{\oplus }>L{i}^{\oplus }$

Q. 43.Mention the structure by calculating the hybridisation of the ion-[Ag(NH3)2]+

Q. The ionic mobility of alkali metal ions in aqueous solution is maximum for

1. 
2. 
3. 
4. 

Q. Which of the following has the highest ionic mobility in an aqueous solution?

1. $R{b}^{+}$
2. $N{a}^{+}$
3. $K^{+}$
4. $L{i}^{+}$

Q. Which of the following statement are incorrect?

1. $Be{F}_2$ forms a complex with NaF in which, beryllium acts as the cation
   
   
2. Be dissolves in alkali forming $\left[Be\right(OH{)}_4{]}^{2-}$
3. LiCI is soluble in pyridine
4. Alkali metal ions have high hydration enthalpies owing to their small size

Q. Dopping of $AgCl$ crystal with $CdC{l}_2$ results in:

1. Schottky defect
2. Frenkel defect
3. Impurity defect
4. Formation of F-centers

Q.

Identify the correct order of the size of the following:

1. $C{a}^{2+}<Ar<K^{+}<C{l}^{-}<S^{2-}$

2. $C{a}^{2+}<K^{+}<Ar<S^{2-}<C{l}^{-}$

3. $C{a}^{2+}<K^{+}<Ar<C{l}^{-}<S^{2-}$

4. $Ar<C{a}^{2+}<K^{+}<C{l}^{-}<S{2}^{-}$

Q. 16.assertion- the mobility of sodium ion is lower than that of pottasium ion reason -the ionic mobilities depends upon on the effective radius of ion

Q. The ionic mobility of alkali metal ions in aqueous solution is maximum for:

1. $L{i}^{+}$
2. $N{a}^{+}$
3. $K^{+}$
4. $R{b}^{+}$

Q. The correct order of the mobility of alkali metal ions in aqueous solution is

1. 
2. 
3. 
4. 

Q.

Ionic mobility of which of the following alkali metal ions is lowest when aqueous solution of their salts are put under an electric field?

1. K
2. Rb
3. Li
4. Na

Q. Assertion :The fluorides of alkaline earth metals are relatively less soluble than chlorides. Reason: Fluorides have high lattice energies.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. Sodium sulphate is soluble in water but barium sulphate is sparingly soluble because:

1. The hydration energy of $N{a}_{2}S{O}_4$ is more than its lattice energy
2. The lattice energy of $BaS{O}_4$ is more than its hydration energy
3. The lattice energy has no role to play in solubility
4. The lattice energy of $N{a}_{2}S{O}_4$ is more than its hydration energy

Q.

Sodium sulphate is soluble in water but barium sulphate is sparingly soluble because

1. The hydration enthalpy of $N{a}_{2}S{O}_4$ is more than its lattice enthalpy

2. The lattice enthalpy of $BaS{O}_4$ is more than its hydration enthalpy

3. The lattice enthalpy has no role to play in solubility

4. The lattice enthalpy of $N{a}_{2}S{O}_4$ is more than its hydration enthalpy

Q. Sodium sulphate is soluble is water whereas barium sulphate is sparingly soluble because:

1. the hydration energy of sodium sulphate is more than its lattice energy.
2. the lattice energy of barium sulphate is more than its hydration energy.
3. the lattice energy has no role to play in solubility.
4. the hydration energy of sodium sulphate is less than its lattice energy.

Q. The correct order of mobility of alkali metal ions in aqueous solution is

1. $K^{+}>R{b}^{+}>N{a}^{+}>L{i}^{+}$
2. $R{b}^{+}>K^{+}>N{a}^{+}>L{i}^{+}$
3. $L{i}^{+}>N{a}^{+}>K^{+}>R{b}^{+}$
4. $N{a}^{+}>K^{+}>R{b}^{+}>L{i}^{+}$

Q.

Which has more lattice energy? NaF or NaCl.

1. NaCl

2. NaF

3. Same

4. Data Insufficient

Q. "While comparison of $L{i}^{+}$ and $N{a}^{+}$ salts in terms of property of complex formation we found that $\left[Li\right(N{H}_3{)}_4]$ exists and $Na$ does not form any complex."
Answer whether the above statement is true or false.
If true enter 1, else 0

Q.

Which of the following is a correct Irving-Williams order (tendency of complex formation)?

1. $N{i}^{2+}<C{o}^{2+}<F{e}^{2+}<M{n}^{2+}$
2. $M{n}^{2+}<F{e}^{2+}<C{o}^{2+}<N{i}^{2+}$
3. $C{o}^{2+}<M{n}^{2+}<F{e}^{2+}<N{i}^{2+}$
4. $F{e}^{2+}<M{n}^{2+}<N{i}^{2+}<C{o}^{2+}$

Q.

When mercuric iodide is added to an aquous solution of KI, the

1. freezing pointis raised
2. freezing point is lowered
3. boiling point does not change
4. freezing point does not change

Q. Assertion :The mobility of $N{a}^{\oplus }$ is lower than that of $K^{\oplus }$ ion. Reason: The ionic mobility depends upon the effective radius of the ion.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Assertion is incorrect but Reason is correct