Give explanations for the large drops in melting point fromC to Si and from Ge to Sn.

Q: In the pyroxene kanoite, the formula unit has two SiO,2 units and is balanced by manganese and…

A: The name of the given compound is kanoite. It is made up of two SiO32-anions and Mg2+ and Mn2+ as…

Q: Why does sodium fluoride have a melting point of 993°C but nitrogen has a melting point of -210°C?

A: Please find your solution below : Melting point of any substance is defined as the temperature at…

Q: cassiterite is an ore of ?

A: Ore: It is a natural occurrence of rock in which minerals are present with economically significant…

Q: 109 1,000,000,000 nano n Calculate the % (mass/mass) composition, ppm, and ppt of Si in an alloy of…

A:

Q: Calculate the composition, in weight percent, of an alloy that contains 218.0 kg titanium, 14.6 kg…

A: Given: Mass of titanium = 218.0 Kg Mass of aluminium = 14.6 Kg And mass of vanadium = 9.7 Kg.

Q: What is the colour of FeSO4.7H2O crystals? How does this colour change upon heating? Give balanced…

A: The chemical formula of ferrous sulphate heptahydrate is FeSO4.7H2O and it can be also called as…

Q: (i) Name the method of refining of metals such as Germanium.(ii) In the extraction of Al, impure…

A: Refining is a process of eliminating impurities to obtain metals of high purity. These impurities…

Q: VF5 is a liquid that boils at 48°C, whereas VF3 is a solid that melts above 800°C. Explain this…

A: The reason why VF5 is a liquid that boils at 48°C, whereas VF3 is a solid that melts above 800°C has…

Q: Silicon carbide (SiC) is made by the high-temperature reaction of silica sand (quartz) with coke;…

A: Given: At high temperature, the reaction of silica sand (quartz) and coke produces silicon carbide…

Q: Boron nitride (BN) is made by the reaction of boron trichloride with ammonia.(a) Write a balanced…

A:

Q: An element forms an oxide, E2O3, and a fluoride, EF3.(a) Of which two groups might E be a member?(b)…

A: a) The oxidation state of E is +3 as it forms E2O3 and EF3 thus E belongs to 3A or 3B group.

Q: 2. "A ferrite with fixed composition can exhibit quite different magnetic behavior when prepared…

A: A ferrite with fixed composition can exhibit quite different magnetic behavior when prepared under…

Q: Cite and explain three reasons why ferrous alloys are used so extensively.

A: Three reasons why ferrous alloys are used so extensively have to be explained below.

Q: Sketch the structure of a 1:1 and 2:1 layer silicates.

A: Structure of 1:1 layer silicate (kaolinite) illustrating the connection between tetrahedral and…

Q: Write some advantages and disadvantages of ceramic materials compared to metals?

A: Metal is a very broad term in itself but in general metals are those chemical elements that are…

Q: Define the term a substitutional alloy?

A: Alloy is the one which is formed by mixing the metals.

Q: Discuss the following sentences: 1- In alumina manufacturing, calcination process is preferred…

A: Discussing the following statements.

Q: What are the silicate minerals, and enlist the industries using them as raw materials?

A: Silicate minerals are the rock making minerals that are made up of silicate groups. Or we can say…

Q: Calculate the composition, in weight percent, of an alloy that contains 105 kg of iron, 0.2 kg of…

A:

Q: Suggest two reasons why zinc and potassium are unlikely to form a solid solution alloy

A: The reasons that zinc and potassium are unlikely to form solid solution alloy are:1. Different…

Q: Does the metallic characteristic of a main-group element increase or decrease as we move down a…

A: The metallic characteristics of a main-group element increases as we move down a family because the…

Q: Replacement of aluminum ions in kaolinite with magnesium ions yields a compound with the formula…

A: Given formula,      Mg3Si2O5(OH)4

Q: 2. Calculate the composition in weight percent of an alloy that contains 200kg of Fe, 400 gm of C…

A: Here we are required to calculate  the composition in weight percent of an alloy which contains…

Q: likely to be silicon doped with Antimony Sb?

A:

Q: 6. Draw a chain silicate structure containing four tetrahedra. Show the numbers of Si atoms, O…

A: Basic unit of silicate, [SiO4]4- tetrahedron, can form single and double chains and sheets.  The…

Q: The metal which is protected by a layer of its own oxide is ans. Copper Gold Aluminum Iron

A: Given Choices  Copper  Gold Aluminum Iron As we know iron in presence of air (oxygen and moisture)…

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: A slag sample is known to contain all of its iron in the forms of FeO and Fe2O3. A sample of 1,000 g…

A: Redox reactions are the reaction that involves simultaneous oxidation and reduction reactions. A…

Q: Write the role of the following: (i) Iodine in the refining of zirconium (ii) Silica in the…

A: i) When impure zirconium is heated with the iodine, it will form volatile compound ZrI4, which on…

Q: As the number of O2- shared per tetrahedral increases, what happens to the amount of charge (from…

A: In this question, we have to find out the correct answer of given problem by the help of silicate…

Q: Rank the following in order of increasing electrical con-ductivity, and explain your ranking: Po, S,…

A: The given elements have to arranged in the order of increasing electrical conductivity, The given…

Q: What are Silicate Ceramics? Give some examples?

A:

Q: What is the difference between chain and cyclic silicates?

A:

Q: what volume of sulfur dioxide at 25c and 1 atm pressure is produced when one boxcarload (4 x 10 ^3…

A:

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: What is a Substitutional alloy?

A: Alloy is a simple mixture of metals. Alloy is defined as a substance formed from the combination of…

Q: What is the difference between substituted aluminum in silicates and adding sodium as modifier in…

A: Interpretation-  To tell about the difference between substituted aluminum in silicates and adding…

Q: (i) Indicate the principle behind the method used for the refining of zinc.(ii) What is the role of…

A: The process of extraction of metals ( in pure form) from minerals is termed metallurgy. Minerals may…

Q: H2 reacts with many s- and p-block elements forming metallic hydrides. On descending a group, the…

A: The question is based on periodic properties of elements. we have to identify the false statements.

Group 13 Elements

In the periodic table, group 13 elements exist in the first p-block. There are six elements present in group 13, which include boron (B), aluminum (Al), gallium (Ga), indium (In), thallium (Tl), and element 113 (ununtrium, (Uut)). Group 13 elements are also designated as the boron family.