a) A negative permanent charge is created when a cation with lower valence replaces a higher valence cation of the same size; (b) Cations which can replace Si4+ in the tetrahedra can also replace Al3+ in the octahedra.  A. If statement A is true B. if statement B is true C. both statement A and B are true D. statement A nor B are true

Q: Part A) Draw the Lewis dot structure for SiO44−. Use square brackets to denote the overall charge.…

A: Lewis dot structures represent the bonding between atoms or molecules with lone pairs on them.

Q: (2) 3luaai What mass of KMNO4 must be dissolved to prepare 1.25 L of O.110 N KMNO4 solution? (K =39…

A:

Q: In our experiment, Magnesium should be heated or burned gradually in a closed crucible? اختر احدى…

A: The solution is given below -

Q: Write the chemical equation for the removal of lead and copper from water using phosphates

A:

Q: Consider the figures above , which most likely to be silicon doped with Galium? * A B D В O c

A: Which likely Si doped with Ga?

Q: Determine the number of bonding electrons and the number of nonbonding electrons in the structure of…

A: The structure of silicon dioxide is drawn as,

Q: Which of the following is not a form of coal? O bituminous O lignite O anthracite O carbonite

A: Given : Which of the given compounds is not a form of coal.

Q: What is the correct structural form for the silicate BaTi(Si3O9)? Select one: a. amphibole (double…

A: Given compound BaTi(Si3O9).

Q: 3. Describe the classification of nanomaterial based on their origin.

A: Please find below the complete classification tree of nano-particles.

Q: Which alkali metal has maximum ionic mobility in aqueous solution?

A: Alkali metals exits as hydrated ions in aqueous solution.As the size of the metal ions increases,…

Q: Silicate (SIO4]4- has a Square planar aO Tetradedral structure b O Planar triangle.c Octahedral.d

A:

Q: MCQ 170: Metal oxide that turns into cement upon roasting with clay is A. NO B. Cao С. ВаО D. MgO

A: Metal oxide: Those chemical compound having metal ion as cation and oxide as anion are known as…

Q: Magnesium reacts with oxygen to form magnesium oxide according to the following reaction: 2 Mg + O2…

A: • Calculation of oxidation Number follow the          following rule :-i oxidation No. of free…

Q: In an experiment, what volume of O2(g) at 0oC and 760 mmHg is produced when 5A of current is passed…

A: Given that, Temperature = 0oC = 273.15 K Pressure =760 mmHg = 1 atm So this is in STP.  It is known…

Q: Silicic acid, SiO2.xH2O(s), is a weaker acid than carbonic acid, H2CO3(aq). Write a balanced…

A: Chemical reaction is given by, Mg2SiO4 + 4CO2 + 2H2O  2Mg+2 + 4HCO3- + H4SiO4 Mg2SiO4 + 4H2CO3…

Q: 11.Which of the following is the least effective conductor? O 1. Purified water O 2. Tap water O 3.…

A: Answer  Pure water is not good conductor of electricity

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: Which of the following substances will conduct electricity in both of its molten and solid states?…

A: As we know,  electricity is conducts due to free electrons and free ions   Sn is the element which…

Q: (a) Determine the number of calcium ions in the chemicalformula of the mineral hardystonite,…

A: The formula expressing the existing atom's types with their stoichiometric number is addressed as…

Q: Why is CO2 considered a molecule but CaO is not?

A: Applying definition of molecules we can define the molecular and ionic species.

Q: Explain the action of TiO2 as a photocalyst during wastewater treatment

A: Wastewater is majorly polluted by the organic textile dye,directly being released into the water…

Q: How do you find the oxidation numbers of Cr and P in the formula unit Cr(PO4)2?

A:

Q: How are the silica tetrahedrons linked for CaSiO3 ? Which class of silicates does this compound…

A: The given compound CaSiO3 is example of pyroxene. The main formula unit in it is SiO32-. The ionic…

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: Boron nitride (BN) has a structure similar to graphite, but is a white insulator rather than a black…

A: a) The balanced reaction for the formation of BN is: B2O3(s)+2NH3(g)→2BN(s)+3H2O(l) b) Calculation…

Q: Why is boron oxide often added to silica glass?

A: Boron is used in glass manufacturing in the way that addition of boron oxide to glass help in…

Q: How are the silica tetrahedrons linked for ZrSiO4? Which class of silicates does this compound…

A: The way how silica tetrahedrons linked for ZrSiO4 are shown as follows,

Q: S406 → 2S20;- 6 O 2 4 O 1 O 3

A: The unbalanced skeleton Chemical equation given in the question is - S4O62- -----> 2S2O32- The…

Q: Which is a metal alloy? O Steel O Diamond O Glasses O Limestone

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: The proper assignment for the oxidation numbers to the elements in Na,SO4 O +2 for Na, +6 for S, and…

A: Given: compound Na2SO4. To find : oxidation state of each element of the compound. Solution : As we…

Q: Calcium metal can be obtained by the direct electrolysis of molten Cacl2, at a voltage of 3.2 volts.…

A: Given: Voltage = 3.2 V And mass of Ca required = 5.28 Kg = 5280 g…

Q: Calculate the electric charge (in Coulombs) required to deposit 13.5 grams of Al from Al3+ ions.

A: Given,  Mass of Al = 13.5 g  Calculate electrical charge (in Coulombs) required to deposit 13.5 g of…

Q: What is an allotrope? Name two Group 4A(14) elementsthat exhibit allotropism, and identify two of…

A: The element of group 4A(14) is shown below: Carbon (C) Silicon (Si) Germanium (Ge) Tin (Sn) Lead…

Q: Which is the common ore of magnesium MgS or MgSO4

A: Ores are the naturally occurring solid material from which a metal can be extracted.

Q: How do I find the oxidation numbers for I2O5 ? what are they and how did you get there?

A: Given :- chemical formula = I2O5  To determine :- oxidation number of both I and O in I2O5

Q: the substance not likely to contain CaCO3 is : a  dolomite b  sea shells c  a marble statue d…

A: Dolomite is a calcium magnesium carbonate with a composition of CaMg(CO3)2.Sea shells are…

Q: Predict the structure and label the charges on the cations in the mineral hedenbergite, CaFeSi2O6

A: Molecular geometry is the 3-D representation of the molecule in a space. In terms of electron…

Q: Based on the Ellingham diagram below, which metal is least stable at 400°C

A: Ellingham diagram is the plot of free energy of oxide formation of metals vs temperature. Those…

Q: In the electroplating of nickel, 0.200 faraday of electrical charge is passed through a solution of…

A: We have given that 0.2 F of electric charge is required for the electroplating

Q: How many energy levels are there in the valence band of a single crystal of potassium with a mass of…

A: given that mass of potassium is 6.05mg

Q: Describe the differences in the allotropes of white and red phosphorus. Explain why red phosphorus…

A: White phosphorous:White phosphorous is made up of P4Possesses complicated network of bonding.Must…

Group 14 Elements

The following elements come under group 14 of the periodic table.