what is lanthanide contraction?

Q: give the cause of lanthanide contraction.

A: The long form of the periodic table is a tabular arrangement of all known elements. Here the…

Q: How does the Mineral Family- Oxides is used in everyday life and in Engineering activities?

A:

Q: Why is the formation of slag useful during the smelting of iron?

A: During smelting of iron to extract the pure iron the temperature is about 1123K. Here the flux CaO…

Q: what are the consequences of lanthanide contraction?

A: Generally, as we move down the periodic table, there is an increase in atomic radii. But in the…

Q: 6. Metallic Cd reacts Cd (s) + 2 I The enthalpy change assoc

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Q: Account for the following : (a) Copper shows its inability to liberate hydrogen gas from the acids.…

A: Oxidation is the process that involved the loss of electrons and oxidized to cation.  Hence when a…

Q: What are the main principles of ?converting cast iron to steel

A: Ore is a mineral from which the metals are conveniently extracted in a profitable way. For example,…

Q: What is Bakelite? How is it formed? Include equations if possible

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Q: What is the oxidation number of the Chromium atom in K2Cr2O7?

A: Oxidation number is the number of electrons gained or lost by an element.

Q: A process employed for the concentration of sulphide ore is:(a) Froth floatation(b) Roasting(c)…

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Q: Draw the structure of MnO2

A: Molecular geometry is the 3-D representation of the molecule in a space. As the Lewis model is not…

Q: How are each of the following involved in iron metallurgy:(a) slag; (b) pig iron; (c) steel; (d)…

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Q: What is the allowable contamination of Aluminium?

A: Given: What is the allowable contamination of Aluminium?     To find: find the allowable…

Q: Co, Fe, and Ni are ferromagnetic. What is the difference between ferromagnetic and paramagnetic?

A: Given,Co, Fe, and Ni are ferromagnetic

Q: (a) Giving examples differentiate between calcination and roasting.(b) What is the role of cryolite…

A: Hello. Since more than one question has been asked, the first question shall only be answered in…

Q: relevance of chemistry in STEELS AND CAST IRONS -STAINLESS STEEL -CAST IRONS

A: Answer - Steel - Steel is made from iron by removing impurities and adding substances such as…

Q: What is the oxidation state of Z in HZO3?

A: The compound given is HZO3.

Q: Calculate the final mineral percentages in the rock from the given oxides. Explain.

A: Oxide Weight% Molecular weight Molecular proportion SiO2 47.9 60.1 0.797 Al2O3 3.68 101.96 0.036…

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: elaborate the process of metallurgy

A: Metallurgy is the process of extraction of metals.

Q: Describe some uses for (a) calcium and its compounds, and (b) magnesium and its compounds.

A: There are many  uses for (a) calcium and its compounds, and (b) magnesium and its compounds.

Q: What are the main reactions for molten iron processing in Blast furnace

A: the main reaction for molten iron in the blast furnace is:

Q: Dinitrogen is very unreactive, but it can form complexes with transition metals. Explain why and…

A: Nitrogen possess three covalent bonds holds the molecule together which makes Nitrogen gas nearly…

Q: How is Vanadium a Problem and an opportunity?

A: Interpretation: How vanadium is a problem and an opportunity is to be determined.

Q: What is the oxidation number of the chromium atom in K7Cr2O7?

A: Given-> I think there is  K2Cr2O7

Q: Which gases are used as shielding gases in tig welding?

A: Given,  Which gases are used as shielding gases in tig welding = ?

Q: What is the antifluorite structure?

A: In antifluorite structure, the position of the cations and anions are reversed to that of the…

Q: What are the two elemental states of iron?

A: 13- The chemical symbol of iron is Fe

Q: Does roasting increase or decrease the mass of sulfides?

A: During the roasting of sulfide ores , sulfides are converted into oxides and sulfur is converted…

Q: Give a brief explanation of this mineral Iron ore

A: Answer - Iron ore - Iron ores are rocks and minerals from which metallic iron can be economically…

Q: In iron smelting, what are the possible chemical equations that will involve CaO if CaO is part of…

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Q: What are purification methods of Cobalt (II) Sulphate?

A: If purifying by electrolysis, an aqueous sulfate solution at 50 to 70°C is usually used with a lead…

Q: A) What is Potassium Trioxalato-Aluminate  B) What are the different uses of this product

A: The solid substance which exhibits a uniform arrangement of atoms in its structure is called…

Q: In large atoms, the lanthanide contraction is characterized by stabilization of the s and p orbitals…

A: Large atoms like Tl, Pb, Bi, Hf, Ta etc. Lanthanide contraction is observed.  These contains filled…

Q: What is Lanthanoid contraction? What are its two consequences?

A: Lanthanoid contraction: A regular decrease in the size of Lanthanide ion due to increases in nuclear…

Q: Ammonia is added when preparing calcium ?oxalate. Why

A: Interpretation -  To tell about why ammonia is added to preparing calcium oxalate -…

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: which secondary metallurgical process is used for production of stainless steel.explain specific…

A: Steel is produced from iron ore in the blast furnace, in the secondary metallurgical process for…

Q: What are the different Selenium components?

A: Please find your solution below : Selenium is a broad range of tools and libraries which is used to…