Reactivity with Air and Water (Group 2)

Q. The Alkaline earth metals are weaker reducing agents compared to Alkali metals because they have low values of oxidation potential.

1. True

2. False

Q. 21. Beryllium oxide is amphoteric or basic

Q.

Among the following oxides, neutral oxide is:

1. SiO₂

2. ZnO₂

3. CO

4. SnO₂

Q.

If X is a nonmetal, its oxide X₂O₃ is expected to be a/an _____ oxide.

1. Neutral

2. Amphoteric

3. Basic

4. Acidic

Q. what are the different kind of elements in perodic table which will form amphoteric oxide

Q.

Estimation by 'Flame photometry' is not helpful in the case of

1. Magnesium

2. Barium

3. Strontium

4. Calcium

Q.

Estimation by 'Flame photometry' is not helpful in the case of

1. Magnesium

2. Strontium

3. Calcium

4. Barium

Q. 31. Silver nitrate is gradually added to an aquecu solution containing 0.01 M each of chloride bromide and iodide ions. The correct sequenc (decreasing order) in which the halides will be precipitated is (1) Br, ChH, I- (2) F. CH, Br (3) +, Br, Ch (4) Cl-, Br,

Q. give examples for acidic oxides, neutral oxides and amphoteric oxides formed by group 14 elements .

Q.

what is hydration enthalpy and how does it attribute in reactivity of alkali metals towards water?