The lustre of a metal is due to:(a) its high density(b) its high polishing(c) its chemical inertness(d) Presence of free electrons.

Q: Without consulting any source other than a periodic table, what relative level of toughness would…

A: Ti -Titanium is the transition metal having atomic number 22.  Ti can loses its two electrons to…

Q: estimate the fraction of electrons above fermi level in sodium and copper at room temperature

A:

Q: Oxidation number of Cr in K2Cr2O7 is

A: Given Oxidation state of Cr in K2Cr2O7

Q: What is the purity of the limestone in terms of %w/w CaCO3?

A: Initial number of moles of hydrochloric acid can be determined as follows: Number of moles  =…

Q: Consider the coordination compound (NH4)2[Os(en)(CN)4], the coordination number (C.N.) and oxidation…

A:

Q: On heating a crystal of KC1 in potassium vapour, the crystal starts exhibitinga violet colour. What…

A: F-centres are the anion vacancies engaged by free electrons as in alkali metal halides.

Q: The oxidation state of X in the species KXO3 is

A: Oxidation State :- Atoms form a molecule. Atoms accepted or released electrons to form a compound.…

Q: ive short answers to the following. a. What is the correlation of ionization potential and atomic…

A: a. As we move from left to right atomic number increases because electron getting added but…

Q: Discuss the following structure of AB2 and ABO3 type oxides in detail with proper diagrams and…

A:

Q: (iv) Arrange the hydroxides of Group II elements (Be to Ba) in decreasing order of solubility…

A: (iv) The decreasing order trend of solubility of group II hydroxides in water is written as follows;…

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: The prefix eka- comes from the Sanskrit word for “one.”Mendeleev used this prefix to indicate that…

A: Eka-manganese was the name given to the element which is below manganese in the periodic table.

Q: Would you expect carborundum(SiC) to adopt a diamond structure or one of higher coordination?…

A: Carbon and silicon are the elements of group 14 having 4 valence electrons in its outer most shell.

Q: define catenation?

A: Catenation is defined as the self linkage property of any atom. It means atoms have tendency to…

Q: what is the role of silica in the metallurgy of copper?

A: The most important ore of copper found on the earth is the copper-pyrite ore whose chemical formula…

Q: state the physical and chemical properties of compound LUTEOLIN (as much as it have)

A: Luteolin is a naturally-occurring flavonoid, with potential anti-oxidant, anti-inflammatory,…

Q: What structural feature is characteristic of a chelate?

A:

Q: What is the name of the reference that contains the topic of synthesis and characterization of…

A: Liquid crystals are the state of matter that can be defined as the intermediate form between solid…

Q: Explain the following :(a) The enthalpies of atomization of transition metals are quite high.(b) The…

A: a. The effective nuclear charge is large and high number of valence electrons of transition elements…

Q: Nickel and copper ores are generally sulfides, whereasaluminum ore is an oxide. Explain this…

A: An acid can be defined as a species that can accept electrons whereas a base can be defined as a…

Q: Nitrous oxide (N₂O), the “laughing gas” used as an anes-thetic by dentists, is made by thermal…

A: The thermal decomposition of ammonium nitrate (NH4NO3) produces Nitrogen oxide gas (N2O). The other…

Q: (i) Thermal stability of hydrides of group 16 elements decreases downthe group. Why?(ii) Compare the…

A: i) The thermal stability of the hydrides of group 16 elements decreases down the group, i.e., H2O…

Q: Several transition metals are prepared by reduction of themetal halide with magnesium. Titanium is…

A: The steps involved in the production of titanium in the kroll's process. In the 1st step…

Q: What is metallic glass? Describe the features that promote high glass-forming ability in metals.

A: Metallic glass: It is an amorphous metal alloy. The atoms in the materials are decorated by…

Q: Lead is more often found in nature as its sulfide than its oxide. Provide a brief rationale for this…

A: Most of the proportion of lead is found in earth crusting, where it is in the form of sulfide ore.…

Q: (a) What compound precipitates when aqueous solutions ofFe21SO423 and LiOH are mixed? (b) Write a…

A: The chemical reaction occurs according to the stoichiometry of the reactants and products.

Q: (a) Mention the optimum conditions for the industrial manufacture of ammonia by Haber’s process. (b)…

A:

Q: The oxidation number of Fe in Fe2Os is

A: The number given to the element during chemical combination is termed as oxidation number.  The…

Q: World production of chromite (FeCr₂O₄), the main ore ofchromium, was 1.5107metric tons in 2003. To…

A: An ore is a mineral which has a valuable mineral inside. These are found in the rocks and are…

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: Give the oxidation state of the metal for each of the following oxides of the first transition…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Write balanced equations for the thermal decomposition of potassium nitrate (O₂ is also formed in…

A: (a) The thermal decomposition of potassium nitrate gives O2. At low temperature the reaction is…

Q: hydrated CuSO4 is blue in colour. why?

A: The molecule that contains water molecule is termed as hydrous.

Q: explain the feasibility of refining sulfur and phosphorous in basic oxygen furnace according to the…

A: Basic Oxygen furnace is a furnace which is basically used for the steelmaking process which converts…

Q: What is the most stable oxidation state of chromium in acid and base?

A: In acid chromium in +6 oxidation states more stable (CrO4 -2)

Q: What is linkage isomerisation and why can it be important?

A: Linkage isomers are two or more coordination compounds in which the donor atom of at least one of…

Q: (a) What are the different oxidation states exhibited by the lanthanoids? (b) Write two…

A: (a) What are the different oxidation states exhibited by the lanthanoids? In the lanthanide series,…