Which of the following compounds is expected to have the highest melting point? MgO BaS CaCl2 K2O SrSe

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: Identify the compound or element with metallic bonding.   He H2O S Li NaCl

A: There are different type of compounds in which different type of bonds are present , and according…

Q: A substance expands when it freezes. Which of the following is the most likely identity of the…

A: Generally, substances condense upon freezing rather than expanding and water is one of the few…

Q: From the data in following table, compute the theoretical density of CaF2, which has the fluorite…

A: Given: Ionic radius of Ca2+ = 0.100 nm Ionic radius of F- = 0.133 nm To calculate: Theoretical…

Q: how is the chemical bonding between atoms of magnesium different from the chemical bonding within a…

A: The bonding that exists between Mg atoms are metallic bonding and the bonding prevails in AlI3 is…

Q: copper(II) sulfate sodium chloride potassium sulfite calcium nitrate

A: Ions are charged species which can be both positively or negatively charged. These are of two types.…

Q: Write the chemical formula for zinc phosphate. ZnPO4 Zn3(PO4)2 ZnP Zn3PO4

A:

Q: What state(s) of matter are the hydrogen halides present in at room temperature? gas solid O liquid…

A: The hydrogen halides are colorless gases in room temperature  Example- HCl,HBr,HI The hydrogen…

Q: Element Atomic Atomic Radius E- configuration ( short Boiling Melting Standard 1st Point in…

A: The standard enthalpy of fusion is the heat (enthalpy) required to change the physical state from…

Q: Which of the following compounds would you expect to have the lowest melting point? CaO H2O Na2O…

A: Ionic compounds with higher charges have higher melting point due to strong intermolecular forces…

Q: Two reasons why a crystal model accurately represents sodium chloride

A: Ionic compounds take on the form of extended three-dimensional arrays of cations and anions. The…

Q: Explain the factors determine the melting point of a compound ?

A: The temperature at which a solid converts its state to liquid at atmospheric pressure is called the…

Q: You are told by your instructor to go to the stock room and find a bottle of the chemical K3Cl. Does…

A: K is potassium, element of group 1 of periodic table with 1 valence electron And Cl is chlorine,…

Q: The melting points of NaCl, KCl, and RbCl are 801∘C, 770∘C, and 718∘C, respectively. Based on this,…

A: Compound Melting point(0C) NaCl 801 KCl 770 RbCl 718

Q: lonic Compound Melting Polnt (C) MgF2 1263 MgBr2 711 CuCl 430 CuCl2 620 Which of the following…

A: Ionic compound is a chemical compound  composed of ions held together by electrostatic attraction.…

Q: FeCl3+ NagPO4

A: Iron(III) chloride reacts with sodium phosphate to form iron (III) phosphate and sodium chloride.…

Q: What are the chemical equations for the following:  CoCl4+ H2O  CuSO4 +NH3 CuSO4 + KSCN CuSO4…

A: CoCl4 + H2O The chemical reaction is, CoCl4 + 6H2O  --->  Co(H2O)6 + 4Cl

Q: What is the formula for the following? gold (I) thiosulfite lithium thiosulfite

A: A compound is formed by the electrostatic interaction between the cation and the anion. The cation…

Q: How many of the following are ionic? NiCl 2 CaCl 2 Mg(OH) 2 SO 2 BaCl 2 C 6H 12O 6 O 2 CaCO 3

A: To identify from given compounds Which are ionic ?

Q: Which of the following contains one or more covalent bonds Cao O NaCl BaBr2 CO

A:

Q: Which of the selections below give an example of an allotrope? carbon dioxide and oxygen gold and…

A: Answer:-This question is answered by using the simple concept of allotropes which are different…

Q: The physical and chemical properties of a molecule depend on its structure. Here are two…

A: Given are two organic compounds.1) ethanol2) dimethyl ether

Q: Now use the bonds and/or interactions you indicated in Q4.6 to explain how these types of…

A: Correct answer -->  C (s, Diamond) Melting point of the molecules -->  CH4   --> - 182°C…

Q: What is the IHD of a chemical compound with a formula of C6H5NO2?   a 4   b 5   c 6   d 7

A: IHD stands for Index of Hydrogen Deficiency. In a hydrocarbon with no double bond or rings, the no…

Q: Which of the following is expected to have the lowest melting point? I3D II IV O II O IV O O o o

A: Melting point of a compound depends on the strength of intermolecular forces. Greater is the…

Q: Alloys have numerous advantages in industrial applications. Which combination of metals is…

A: Applying composition of alloys.

Q: What is Compound 4? CH,CI / AICI, Cl2 / FeCl, CH,MgBr H20 4 OH LOH он но CI CI A B D

A:

Q: Explain what scientific principles you used in making this prediction and how this supports your…

A: Highest melting point - CaO  Melting point of the molecules is given below-->  NaCl - 801°C CaO -…

Q: Which of the following compounds is likely to have the lowest melting point?   : C a O MgO S c O Se…

A: The melting points of the oxides of the Alkaline Earth metals or 2nd group element increases till…

Q: Many nonmetallic elements have lower melting and boiling points than metallic elements because their…

A: Generally, non-metals have lower boiling point and melting point compared to the metals.

Q: Write the full electron configuration of Si, Si+4 and Si-4. How many valence electrons are in each…

A:

Q: the compound molecular in nature in gas phase but ionic in solid state is: a PCl5  b   CCl4 c  PCl3…

A: PCl5 is molecular in the gas phase

Q: Cr(s) + O2(g)→ Cr,O3(s)

A: According to the Law of conservation of mass " all atoms of different elements must be equal on both…

Q: Which of the following compounds would most likely have the highest melting point? NaCl NaF CaCl2…

A: Melting point is defined as the temperature at which a solid starts melting and becomes liquid.…

Q: Why does I2 have a lower melting point than KCl?

A: The temperature at which a solid changes into a liquid state is known as the melting point. The…

Q: THE CHEMICAL FORMULA OF THE FOLLOWING COMPOUND •Sodium hydroxide •Potassium permanganate

A: A chemical formula indicates the elements and their proportions in a compound .

Q: Choose the compound in which the metal cation has the highest charge (the highest positive number)?…

A: An oxidation number  definition is a number assigned to a compound or element to show how many…

Q: What are the chemical equations of the following:  CuSO4 + HCl CoCl2 +HCl Ni(NO3)2 +HCl

A:

Crystal Structures

Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.