Which is a description of a pattern displayed byelements in the periodic table?A. repetition of their physical properties whenarranged by increasing atomic radiusB. repetition of their chemical properties whenarranged by increasing atomic massC. periodic repetition of their properties whenarranged by increasing atomic numberD. periodic repetition of their properties whenarranged by increasing atomic mass

Q: The reaction of lithium with sulfur is similar to that of sodium with sulfur. Write the balanced…

A: Write the balanced chemical equation for the reaction of lithium with sulfur. Include phase symbols.

Q: When conducting the electrolysis of water, two gases are formed.  Which of the statement is false?…

A: Electrolysis is a process in which electrical energy is converted to chemical energy.

Q: Concerning the albedo principle, when it is ice melts, which means heat is reflected back into…

A: We know that snow and ice have the highest albedos while water don't

Q: 11. Tin does not react with iron(II) oxide, but it does reduce lead(II) oxide to lead. What is the…

A: Given : reactive conditions of metals.

Q: Give some examples of Silicates?

A: Examples of silicates: Quartz, feldspar, mica, amphibole, pyroxene, and olivine. Silica tetrahedra.

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: Melting and Boiling Points of Group 4 elements 5000 |MPt C) |BPt C) 4000 3000 2000 1000 c' Si 'Ge Sn…

A: Melting point is defined as the constant temperature at which a solid changes into liquid. And the…

Q: By fully describing the nature of each solid including a diagram for each, explain why solid HCl…

A: Melting point of a solid is quite dependent on the nature of the force between the atoms in a…

Q: Discuss the chemistry of rocks and minerals and how they can undergo chemical reactions in nature.

A: Minerals are the inorganic solids, such as plagioclase, orthoclase, calcite, clay, and quartz, and…

Q: At room temperature, one of these compounds is a solid and one is a liquid: SiO, or PBr3.

A:

Q: Describe the PHYSICAL PROPERTIES of the following Specifically, what type of matter is this? (e.g.…

A: Hello. Since the question consists of multiple sub-parts, the first three sub-parts shall be only…

Q: Copper has FCC crystalline structure. The di b0oy and atomic weight are given 8.93 g/cm 3 and 63.54…

A: Copper has FCC crystalline structure. Then the total number of atoms, Z=4 Density=8.92 g/cm3  Atomic…

Q: The chemical analysis of a macromolecule has been provided. What is this macromolecule? Element…

A: The empirical formula of any compound can be determined by using the percentage mass composition of…

Q: Write the balanced chemical equation for the reaction of elemental zinc and molecular oxygen to…

A: A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and…

Q: give any one example of isodiaphers

A: Isodiaphers:The atoms which are having different atomic number and mass number but same difference…

Q: The density of BCC lithium metal is 0.534 g/cm3 and the atomic mass is 6.94 g/mol, the lattice…

A: Density of lithium = 0.534 g cm-3 atomic mass(in g) = 6.94 g mol-1

Q: How much heat, in kilojoules, is absorbed when a 48.11 g sample of cesium metal is heated from 16.6…

A: Mass of cesium metal = 48.11 g Atomic mass of Cs = 132.9 g/mol So, moles = given mass/ atomic mass =…

Q: Illustrate the electronic configuration of the following elements and *give their group number based…

A: Details of given elements given below like their electronic configuration, group number, use ,etc.

Q: Describe the properties of the solid,liquid, and gaseous states.

A: Solids, liquids and the gaseous states are the types of matter, which surrounds us. Properties of…

Q: Potassium iodide (KI) exhibits predominantly ionic bonding. The K+ and I− ions have electron…

A:

Q: Use principles of atomic structure to answer each of the following: (1] (a) The radius of the Ca…

A: Hello. Since the question contains multiple subparts, the first three subparts are solved. In case…

Q: Prelaboratory Assignment: The Alkaline Earths and the Halogens 1. All of the common noble gases are…

A: Boiling point of compound is defined as the temperature at which vapor pressure of liquid equals to…

Q: Write the simplest formula of the oxide. Write the balanced equation for the reaction. Include the…

A:

Q: An electrical insulator is a material

A: An insulator can be considered as a pure chemical element.

Q: What important information does the melting point of a substance provide?

A: Melting point of a substance is a defined as the temperature at which a solid melts. It is a…

Q: Write a balanced chemical equation based on the following description: the reaction of gaseous…

A: The balanced equation can be defined reaction where the number of each atom is same on both sides…

Q: Classify V ubstance shown in the sketch below. You can click the other tabs in the sketch to get a…

A: It is not a solution, and solutions are a homogenous mixture It is not a pure substance, as the pure…

Q: Having difficulty with writing balanced chemical reaction

A: Balanced chemical equation is defined as a chemical equation in which the product side and the…

Q: Explain how an experiment involving a mixture of KCl and KClO3 heated together, illustrates the law…

A: Interpretation-  To explain how an experiment involving a mixture of KCl and KClO3 heated together…

Q: Based on the periodic table of elements compute the molecular weight of potassium permanganate,…

A: Potassium permanganate ( KMnO4 ) is a violet colored compound that is toxic and can be fatal if…

Q: Using the provided table and the equation below, determine the heat of formation for PbS. 2 PbS (s)…

A: Heat of reaction = Heat of reaction of products - heat of reaction of reactants

Q: Select one of the alkali metals and write a balanced chemical equation for it's reaction with…

A: Alkali metals are group 1 metals  Hence let's take sodium metal i.e Na

Q: Arrange the nonmetal elements of period 3 in order of decreasing melting point.

A: The melting point of a substance is the temperature, at which the solid phase converted to the…

Q: Temperature has to do with the motion of atoms.  In general, the greater the motion of the atoms in…

A: Temperatures provide thermal energy, and thermal energies convert into kinetic energy

Q: Is an igneous rock a mixture compound or element or none of the above.

A: Igneous rocks are formed by the solidification of the molten lava present in the earth crust.

Q: released

A: Moles of C = ( mass / molar mass of C )  Moles of C = ( 0.8g / 12.01gmol-1 )  Moles of C = 0.067 mol…

Q: Consider these statements about an element E in Group SA E is essential to life, found in bones,…

A: Phosphorous is Group 5A element. Phosphorous is one of the essential element to life. Phosphorous…

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

A: Applying composition of alloys.

Q: 1. The atomic number of element X is smaller than 20. The first to eighth ionization enthalpies of…

A: Period 2 elements like Li,O,N,Be,B,C,O,F

Q: Relate the properties of alkali and alkaline earth metals to their locations on the periodic table…

A: Alkali metal is placed in group 1 . As they are placed in group 1 ,they show +1 valency because they…

Q: 12. A student writes the following incorrect chemical equation for the synthesis of magnesium oxide.…

A: Solving only first question in accordance with guidelines.

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: How does an activity series rank chemical elements?

A: How does an activity series rank chemical elements? a.by the number of valence electrons b.by…

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

A:

Q: Q611HOW Lo prePare loML afo. Nao H, m.wt Nao H =40. 2N o f %3D

A:

Q: Arrange the following elements in order of decreasing innovation energy In, F, Si, N, Ga

A: Note: It will be ionization energy and not innovation energy. To determine: Arrangement of element…

Q: For each of the following pairs of substances, predict which will have the higher melting point, and…

A: The melting point of substances depends on the crystaline structure ,type of bonding and inter…

Q: Using molecular properties, explain why bromine is more disordered than mercury. Select those that…

A: Given that, We have water, mercury,and bromine I.e.three liquids at standard temperature. Also Given…

Q: Physical chemistry should be studied by students in chemical engineering because * It applies…

A: It deals with experimental observations.

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.