Assertion (A): | Metallic sodium dissolves in liquid ammonia giving a deep blue solution, which is paramagnetic. |
Reason (R): | The deep blue solution is due to the formation of amide. |
1. | (A) is false but (R) is true. |
2. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
3. | Both (A) and (R) are true and R is NOT the correct explanation of (A). |
4. | (A) is true but (R) is false. |
LiF is sparingly soluble in water because it has:
1. partial covalent character.
2. small electronegativity.
3. high lattice enthalpy.
4. low hydration enthalpy.
The structures of beryllium chloride in solid-state, and vapor state are :
1. Dimer, and Linear, respectively.
2. Chain in both.
3. Chain, and dimer, respectively.
4. Linear in both.
HCl was passed through a solution of CaCl2, MgCl2, and NaCl. Compound(s) that get crystallize is/are-
1. Only NaCl
2. Only MgCl2
3. NaCl, MgCl2, and CaCl2
4. Both MgCl2 and CaCl2
Identify the correct statement from the following:
1. | The correct order of hydration enthalpies of alkaline earth cations is Be2+ < Mg2+ < Ca2+ < Sr2+ < Ba2+ |
2. | Lithium and Magnesium show some similarities in their physical properties as they are diagonally placed in the periodic table. |
3. | Lithium is softer among all alkali metals. |
4. | Lithium chloride is deliquescent and crystallizes as a hydrate, LiCl·6H2O. |
Which of the following is an amphoteric hydroxide?
1.
2.
3.
4.
Which of the alkali metal chloride (MCl) forms its dehydrate (MCl.) easily?
1. LiCl
2. CsCl
3. RbCl
4. KCl