Questions tagged [alkaline-earth-metals]

For questions about the alkaline earth metals (group 2), their compounds, and their physical and chemical properties.

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4answers
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Is beryllium an alkaline earth metal?

For context: I got a question asking, "Which of the following alkaline earth metals do not give flame colour?". I quickly marked $\ce{Be}$ and $\ce{Mg}$ and got negative marks. The following is a ...
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0answers
18 views

Basicity of oxide and thermal stability of oxosalt

I recently read in Concise Inorganic Chemistry by J.D.Lee, with regard to s-block elements: the oxides and hydroxides of group 2 metals are less basic than 1; consequently their oxosalts are ...
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2answers
193 views

Unusual oxidation numbers for alkaline earth metals?

Are there compound of alkaline earth elements showing unusual oxidation numbers? For the sake of the question, every oxidation number different from +2 counts as unusual, most exciting would be ...
-2
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2answers
115 views

Is Magnesium Oxide alkali [closed]

Given that Magnesium Hydroxide is an alkali, can we say Magnesium Oxide is an alkali since dissolving Magnesium Oxide in water can produce Magnesium Hydroxide?
1
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1answer
138 views

Trends in solubility of group 2 nitrates

In my lab report, we are required to explain the trends in solubility of group 2 salts, going down the group. I had explained all of the trends except one, group 2 nitrates. The following is the data ...
5
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0answers
1k views

Why are bicarbonates of alkaline earth metals stable only in aqueous solution?

Numerous internet sources (1, 2, 3, etc.) state this fact, including a Wiley publication "Alkaline Earth Metals: Inorganic Chemistry - William S. Rees Jr" (DOI: 10.1002/0470862106.ia005) on page 9: ...
8
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4answers
6k views

Why does magnesium oxide not react with water?

There is a question in my textbook which asks "which of the reactions are not possible to occur". The right answer is $\ce{MgO + H2O}$ and my chemistry teacher confirmed it. Why is that so? I thought ...
14
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4answers
5k views

Are lithium bicarbonate and magnesium bicarbonate both soluble in water?

Are lithium bicarbonate and​ magnesium bicarbonate both soluble in water? Source: JEE Mains 2017 (National Level Examination of India) Please do cite a reputed source along with your answer. ...
1
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1answer
94 views

Hydration, Coordinate Bonding, and Reduction Potential in Groups 1 and 2 Elements [closed]

Whenever an alkali metal such as Lithium is hydrated/solvated, coordinate bonding occurs and it is the high hydration enthalpy of lithium which makes it the strongest reducing agent in aqueous ...
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0answers
45 views

Why does Mg(HCO₃)₂ on heating gives Mg(OH)₂? [duplicate]

Normally, bicarbonates on heating forms carbonates. Why does Mg not give this too? In a reference book I am referring to, it is given that it is due to high solubility product of Mg(OH)₂ compared to ...
3
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0answers
79 views

What is reason of stability of metal (Sr and Ba) peroxides?

While studying inorganic chemistry I came across the following chemical equation. $$\ce{M + Air\left(1/2O2 + N2\right) ->[Δ] MO ->[\text{Excess}~O2] MO2 (Stable) + M3N2}$$ $$\ce{M} = \ce{Sr, ...
12
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2answers
79k views

Why does the solubility of Group II hydroxides increase and the solubility of sulphates decrease down the group?

I know that, solubility of alkaline earth metal hydroxides increases down the group and solubility of alkaline earth metal sulfates decreases down the group. I wish to understand the reason for these ...
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1answer
65 views

Apparent contradiction in the name of group 2 elements

From my understanding (I might be very wrong), the "earth" in alkaline earth metals means non-metallic, insolube in water and resistant to heating, therefore the oxides and hydroxides of group 2 ...
6
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0answers
335 views

Why can't beryllium react with hydrogen gas directly to give hydride?

I read in a textbook that all alkali metal and alkaline earth metal can react with hydrogen directly to give hydride except for beryllium. I want to know the reason why because I know that $\ce{BeH2}$ ...