Define valency by taking examples of silicon and sulphur?

Q: Which of the following compounds is likely to have the lowest melting point? NaCl CS2 Pb…

A: Melting point: The temperature at which a solid substance melts to achieve liquid state. Melting…

Q: Define the term 'crystal lattice.’

A: Crystals- These are the atoms or group of atoms which are arranged and placed in an ordered 3-D…

Q: Estimate the boiling point of CS2.

A: Given: CS2

Q: 1) What does number of bonding electrons per atom (e/a ratio) means? How does it affect the crystal…

A: Given: We have to tell how the number of bonding electrons per atom affect the crystal structure in…

Q: Differentiate between ionic bonding and van der Waals bonding.

A: Differentiate between ionic bonding and vander Waals bonding.

Q: Differentiate the metals and nonmetals based on their: Intramolecular Bond, Intermolecular Bond, and…

A: Metals have loosely bonded valence electrons and can easily donate elctrons to other atoms .They…

Q: Distinguish among the substances silicon, silica, and silicon?

A: Silicon ,  Silica and Silicone has to be distinguished.

Q: Describe the shape Independent units or lattice  Ratio of Na+ to Cl-

A: The shape of NaCl can be seen from the structure as cubic. Hence the NaCl is cubic in shape.

Q: Using lithium  of atomic number 3 and chlorine of atomic number 17 describe electroovalent bonding.

A: Given, Element Li having atomic number 3 Another element Chlorine of atomic number 17

Q: Distinguish among the substances silicon, silica, and silicone.

A: Semiconductors composed of group 14 elements having 4 electrons. These elements combine with many…

Q: Using your knowledge of molecular structure, identify the main intermolecular force in the following…

A:

Q: Which of these ionic solids would have the largest lattice energy?  Group of answer choices a) CsI…

A: Given,a) CsIb) CaBr2c) SrOd) BaSO4e) NaF

Q: Calculate the energy needed to dissociate 1.00 mol of crystalline RbCl into its gaseous ions if the…

A:

Q: Calculate the standard enthalpy of formation of the M20(s) metal oxide (AHf in kJ/mol) using the…

A:

Q: 13. According to Molecular Orbital Theory, which of the following diatomic molecules is NOT likely…

A: 13).  the bond order of Be molecule is 0 ( zero ) . So it can not exist . option (b) is correct.

Q: What type of bonding do metalloids generally do to form crystal structures? Covalent lonic O…

A: Covalent bonding is the main bonding to form the crystal structures of the metalloids. In this case…

Q: what type of lattice does the ionic compound Ba3N2 belong?

A: Types of lattice energy does not make any sense. The lattice energy is the energy required to…

Q: 8.13 In which of the following states would NaCl be electrically conducting: (a) solid, (b) molten…

A: In which of the following states would NaCl be electrically conducting has to be given.

Q: Explain the term crystal radii?

A: Crystal radius (Metallic radius) is one-half of the distance between the nuclei of two adjacent…

Q: What is the geometery of SO2 (including the steps for deciding the geometery)?

A:

Q: Which of the following compounds requires the most energy to convert one mole of the solid into…

A:

Q: Solid MgSO4 is dissolved in water, and the temperature of the solution increases. Which of the…

A: Explained as follows

Q: Classify each species as covalent molecular, covalent network, ionic, or metallic.

A:

Q: What is the value of principlal quantum number n of orbital 4p? O A. 2 В. З OC.1 D. 4

A: The electron shell is designated by the principle quantum number n. Since n denotes the most likely…

Q: Which of the following is NOT possible?       3f   4d   5p   2p   2s

A: According to quantum mechanics, there are four types of quantum numbers. The electrons are filled in…

Q: The melting and boiling points of sodium metal are much lower than those of sodium chloride. What…

A: Melting point of any substance is defined as the temperature at which the substance will start…

Q: In a hydrogen molecule, the two hydrogen atoms are held together by a single bond with a bond energy…

A:

Q: Which is shorter—an N–H bond or a C–H bond?

A: The distance between the nucleus of two bonding atoms is known as bond length. The value of bond…

Q: carbon dioxide is transparent to visible light and opaque to infrared radiation true or false?

A: CO2 is the main reason of the green house effect since it reflects (IR) infrared radiated nightly…

Q: The most rigid compound is? Select one. O a. CO2 Ob. Diamond Oc. Si02 Od Graphite

A: The rigidity of compound depends on type of bond and strututure of atoms by which compound is…

Q: Is iodine monochloride in solid form conductive with respect to electrical conductivity? Why or why…

A: Iodine monochloride is a Black solid. Iodine monochloride is polar in nature due to…

Q: In the BCC crystal structure, atoms touch along which direction? O [111] O [011] O (001) O (111) O…

A: In this question, we have to choose the correct answer from the given option.

Q: The ionic compound CaO crystallizes with the same structureas sodium chloride (Figure 8.3). (a) In…

A: a. The crystalline structure of sodium chloride (refer Figure 8.3 in the book) has six Cl ions in…

Q: Van der Waals bonds occur in many molecules, but hydrogen bonds occur only with materials that…

A: Atoms are held together in a molecule because of some attractive and repulsive forces. These forces…

Q: Which has the smallest radius of the following? O Mn O Mn 2+ Mn 3+ jes.

A: As the positive charge increase on element radius decreases due to increase in  nuclear charge. So,…

Q: What are the types of H-bonding? Which of them is stronger?

A: Given: Hydrogen bonding

Q: For each matchup below state which one has the higher melting/boiling point and state why. H20 vs…

A: The boiling point of any compound is the temperature at which the vapor pressure of the compound…

Q: If galena (Pbs) was defined by metallic bonds ,calculate the radius ratio between the two elements…

A: Introduction: The radius ratio is the ratio of the cation (smaller ion) and that of the anion…

Q: Why the radius of Fe+2 is greater than Fe+3?

A: The distance from the nucleus to the outer most shell of an atom is called as the atomic radius. As…

Q: Type of bond of helium and oxygen combined

A: No bond

Q: For each of the following pairs of substances, predict which member of the pair will have the higher…

A: Ionic compounds have strong electrostatic attractions between oppositely charged ions in an array.…

Q: Q1. The net potential energy between two adjacent ions, EN, is represented by A В EN pn where En is…

A: 1. Given: The expression for net potential energy between two adjacent ions is as follows,…

Q: List the compounds in order of decreasing covalence and explain why: HI, HCl, HF, HBr

A: From the electronegativity difference we can determine the nature of bond , more the…

Q: Explain with examples, how bonds are formed in ionic compounds and covalent compounds.

A: Given : ionic and covalent compound.  To find : How ionic and covalent bond forms.  Solution : As we…

Q: Which compound likely has a higher melting point, aluminum chloride AlCl3 or Phosphorus trichloride…

A: So the melting point of given two compounds i.e. aluminium Chloride ( AlCl3) and phosphorus…

Q: For each substance in the pair, list the forces between the formula units (IeFs for most, but IaFs…

A: According to the question, here we have to list the forces between the formula units (given) &…

Q: please explain before answering On the basis of your knowledge of bonding in liquids and solids,…

A: Melting point can be defined as the temperature at which the substance starts melting.

Q: The best explanation for the fact that diamond is extremely hard is that diamond crystals A. are…

A: Diamond is actually allotrope form of elemental C. In its structure each C is bonded to 4 other C…