One of the alkali metals reacts with oxygen to form a solidwhite substance. When this substance is dissolved in water,the solution gives a positive test for hydrogen peroxide, H2O2.When the solution is tested in a burner flame, a lilac-purpleflame is produced. What is the likely identity of the metal?

Q: (a) What is the range of oxidation states shown by the ele-ments of Group 5A(15) as you move down…

A: (a)

Q: 17. Which of the following pairs of oxides will react with both dilute acid and alkali to form…

A: This is an acid base reaction

Q: Is each oxide basic, acidic, or amphoteric in water: (a) MgO; (b) N₂O₅; (c) CaO; (d) CO₂; (e) TeO₂?

A: Since we answer only upto 3 sub-parts so we'll answer first three sub-parts. Please resubmit the…

Q: How does the basicity of SnO2 in water compare with that of CO2? Explain.

A: The basicity of SnO2 in water has to be compared with carbon dioxide.

Q: Which of the following statements is true about hydride ions or compounds?   Among second-row…

A: Answer

Q: The melting points of alkaline earth metals are many times higher than those of the alkali metals.…

A: Alkaline Earth Metals have two valence electrons while the alkali metals have one valence electrons.…

Q: Provide real-life examples of alkaline earth metals and alkali and the ways in which they are used…

A: Alkaline earth metals are present in group-2 . They are s-block elements.

Q: How do the transition metals in Period 4 affect the pattern ofionization energies in Group 3A(13)?…

A: Concept introduction: Ionization energy: The required energy to remove an outermost electron from a…

Q: Complete and balance the following equations:(a) An active metal reacting with acid,…

A: A chemical reaction is the symbolic representation of the conversion of substances to new…

Q: In some reactions, Be behaves like a typical alkaline earth metal; in others, it does not. Complete…

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Q: what's the balanced chemical equation of Titanium (IV)butoxide + oxalic acid + ammonia + water ->…

A: A balanced chemical reaction is when the same number of every element is present on the reactant…

Q: Explain how atomic properties, such as ionization energy and electron affinity, relate to the…

A: Ionization energy is the minimum amount of energy that is required to remove the most loosely bound…

Q: Question six

A: Reduction of Nickel (II) oxide to Nickel Metal:

Q: When orange solution containing Cr2O72–ion is treated with an alkali, a yellow solution is formed…

A: Given,Orange solution containing Cr2O72–ion is treated with an alkali, a yellow solution is formed…

Q: Hydroxylamine (NH2OH) reduces copper(II) to the free metal in acid solutions. Write a balanced…

A: The chemical reaction in which number of atoms for each element in the reaction and the total charge…

Q: Strontium crystal has a mass density of 2.64 g/cm' and a molar mass of 87.62 g/mol Estimate the…

A: Answer is explained below.

Q: Does the reaction of a main-group metal oxide in water pro-duce an acidic solution or a basic…

A: Main group elements are the elements of s and p block. The element which belongs to second period…

Q: Would you expect technetium(II) oxide, TcO, to react more readily with HBr(aq) or NaOH(aq)

A: technetium(II) oxide, TcO being a metal oxide is basic in nature. Therefore, it will react more…

Q: Describe the following :(i) The role of cryolite in electro metallurgy of aluminium.(ii) The role of…

A: In the extraction of pure metals, certain compounds or derivatives are used to ease the reaction and…

Q: Use condensed electron configurations to predict the relative hardnesses and melting points of…

A: Condensed electronic configuration is written for elements of higher atomic number. It is written in…

Q: (a) One of the alkali metals reacts with oxygen to form a solidwhite substance. When this substance…

A: The periodic table is the representation of the elements in the increasing order of their atomic…

Q: 5. Why do alkaline-earth metals as a group have higher densities than alkali metals? 6. Name the…

A: General

Q: Explain the observation for the increasing stability of the n+2 oxidation state in the heavy main…

A: Answer - A heavy element is an element with an atomic number greater than 92. The first heavy…

Q: Name two metals which occur in nature as oxides.

A: Metals are the elements which lose electrons to acquire a stable electronic configuration. When loss…

Q: How do the acidities of the aqueous solutions of the alkaline earth metal ions (M2+) change in going…

A: Alkaline earth metals (Gp-2): Alkaline earth metals are electropositive in nature, and they have a…

Q: Many compounds of Group 3A(13) elements have chemical behavior that reflects an electron…

A: Group 3A(13) elements are Boron group family which include elements: Boron Aluminum Gallium Indium…

Q: Which is more acidic and why?  [Fe(H2O)6]2+ or [Fe(NH3)(H2O)5]2+

A: Acidity: It basically describes the how much amount of acid present in given compound. Acid: Species…

Q: Some of the water on Earth was formed by reactions of iron and silicon oxides and methane. Write the…

A: To write the balanced  equation for the reaction of ferric oxide and methane

Q: 32 Which of the carbonates below are NOT decomposed by heat? LiCO and NazCO: CACO, and LICO: CACO,…

A: For question 32; Sodium Carbonate and Potassium Carbonate are thermally stable compounds so they do…

Q: Write the chemical formula for each of the following compounds, and indicate the oxidation state of…

A: The chemical formula of Hydrogen telluride is :  H2Te

Q: Predict whether each of the following oxides is acidic, basic,amphoteric, or neutral: (a) NO2, (b)…

A: Acidic oxides : oxides of non - metal are generally acidic in nature as they react with water to…

Q: Write a chemical formula for each compound or ion,and indicate the oxidation state of the group 5A…

A: Solution: a)Phosphate ion: Chemical formula of phosphate ion is PO43-. Phosphorus (P) is the 5A…

Q: Name the following compounds and assign oxidation states to the halogens in them: (a) KClO3

A: The given compound is KClO3 To find: Name of the given compound Oxidation state of the halogen

Q: Write the chemical formula for each of the following compounds,and indicate the oxidation state of…

A: (a) The chemical formula of sulfur tetrachloride is SCl4 Sulfur is the Group 6A element present in…

Q: 1.Which of the following is the principal combustion product of Na metal? a.NaO2 b.Na2O2 c.Na2O…

A:

Q: Another Group 14 (4) oxide has the formula Pbo. i Determine the oxidation state of lead in PbO and…

A: Given :- formula of group 14(4) oxide = PbO  To determine :- oxidation state of lead in PbO and…

Q: In the alkali metal group, the Cesium is less reactive than lithium.

A: To find: Whether the given statement is true or false.

Q: Explain how the diphosphate ion, [O3P−O−PO3]4−, can function as a water softener that prevents the…

A: The reason of diphosphate ion as a water softener has to be given,

Q: Hydroxylamine 1NH2OH2 reduces copper(II) to the free metal in acid solutions. Write a balanced…

A: Introduction: We have to balance the reaction between hydroxylamine and Cu2+.

Q: 14. Does the reaction of a main - group metal oxide in water produce an acidic solution or a basic…

A: Please find your solution below : The main group metal oxides consist of oxides of alkaline earth…