Referring only to a periodic table, give the ionic charge expected for each of these representative elements. (Type your answ (a) Be (b) Kr (c) Li (d) P. (е) Te (f) CI (g) C (h) Ba Need Help? Read It

Q: Why are elemental dopants for Silicon or Germanium usually chosen from group XIII or group XV?

A: The elemental dopants for silicon or germanium is usually chosen from group XIII or group XV

Q: What technique should be used to dope an impurity into a metal?

A: Doping is the purposeful introduction of impurities into an inherent semiconductor for the goal of…

Q: Lithium atoms, like hydrogen atoms, have only a single electron in their outer shells, yet lithium…

A: Hydrogen atoms bond each other because each atom shares its electron and it takes only 2 electrons…

Q: Put a check (/) to those properties applicable for polar molecule. _7. High vapor pressure _1. High…

A: Ina polar molecule, one end of the molecule is slightly positive , while the other end is slightly…

Q: Why zener breakdown voltage decreases with increase in temperature?

A: One of the most important characteristics of zener diode is zener break down. When a reverse voltage…

Q: If 112 g of silicon (Si) react completely with 64 g of oxygen (O) to form silica (SiO2), what is the…

A: Ratio of the amount of silicon to oxygen

Q: Which of the following elements would you predict to have properties most like those of silicon…

A: Germanium have properties most like silicon.With the reference of periodic table Germanium element…

Q: A set of interacting parts forming a complex whole

A: group of interacting, interrelated, or interdependent elements forming a complex whole or unity  An…

Q: Explain with sketch, the atomic and crystal structure of a) Silicon b) Germanium

A: The Atomic and Crystal structure of (a) Silicon (b) Germanium

Q: A carbon atom, with a half-full outer shell of electrons—four in a shell that can hold eight—readily…

A:

Q: Polonium, the Period 6 member of Group 6A(16), is a rare radioactive metal that is the only element…

A: The density of the unit cell is given by,

Q: Lithium has only two naturally occuring isotopes: lithiumi-6 and lithium-7.  Lithium-6 has a mass of…

A: The atomic mass of lithium can be determined by the following expression.

Q: One amazing and useful fact about nature is that different elements and molecules each have a unique…

A: Introduction: Study of the different astronomical object is the fascinating approach towards the…

Q: Calculate the radius of a tantalum atom, given that Ta has a BCC crystal structure, a density of…

A: Given  Density of the atom = p = 16.6g/c3 atomic weight = A = 180.9 g/mol  Avagadro number = NA=…

Q: Based on their locations on the periodic table, which two elements would you expect to form positive…

A: Boron and aluminum are the two elements which form ions of +3 charge.

Q: 2. Lithum crystallizes in the body - centered cubic structure with an edge length Ca) of 350 .9 Pm ,…

A:

Q: Rotation of Fluid Elements 4.86 PQ What is meant by rotation of a fluid element? Use a sketch to…

A: What is meant by roation of a fluid element. Use a sketch.

Q: How do the atoms of a solid move?

A: Atoms in a solid only shake back and forth in place. The reason is In the solid the particles the…

Q: The smallest particle of any chemical element that can exist by itself and yet retain the qualities…

A: Atom is the smallest part in which an element can be divided. We can divide matters into these…

Q: Who first explained Brownian motion and made a convincing case for the existence of atoms?

A:

Q: Name the radiation which can be detected by a solution of silver chloride?

A:

Q: Sketch the atomic structure of copper and discuss why it is a good conductor and how its structure…

A: Copper is good conductor due to presence of one electron at the outer shell so it conducts easily.…

Q: Based on its function, which of the following element types best describes J? A nonmetal В liquid…

A: All electrical wires are designed in such a way that on the inside they have a good current carrying…

Q: Calculate the fraction of atom sites that are vacant (i.e., Ny/N) for lead (Pb) at its melting…

A: The given values with suitable variables are listed below. Here, T denotes the melting point and Qv…

Q: The atomic weight of hypothetical alloy is 77.4 g/mol, density is 8.22 g/cm', and atomic radius is…

A: given Atomic weight=77.4 g/molDensity (ρ)=8.22 g/cm3Atomic radius =0.125 nm

Q: Discuss which contains more atoms: 1kg of lead or 1kg of aluminium?

A: A mass of 1 atomic mass unit is expressed in units of kilograms as,The mass of one atom of lead is…

Q: Two initially identical samples A and B of pure gemanium are doped with donors to conshtration of…

A: The question is based on doping concentration of semiconductors.

Q: Find the percentage by mass of the elements in strontium sulfide SrS (to the nearest 1%) Omit the %…

A: The molar mass of SrS, strontium sulfide is 119.685 The atomic mass of strontium is 87.62 so the…

Q: Why is boron less chemically reactive than beryllium? O A. Boron needs to gain 3 electrons to have a…

A: Why is boron less chemically reactive than beryllium because boron needs to loose 3 electrons while…

Q: Calculate the radius of a vanadium atom, given that V has a BCC crystal structure, a density of 5.96…

A: Given  Density ρ=5.96g/cm3 Atomic weight A=50.9 g/mol No of atoms in BCC=2

Q: Today I submitted this question and was given and answer but I cannot figure out where the 8 O came…

A:

Q: Calculate the coulombic force of attraction between Ca and oʻin CaO, which has the NaCl- type…

A: q1= +2e  q2= -2e  a= 0.238 nm

Q: What do covalently bonded atoms form?    __________________________

A: covalent bond occurs when pair of electrons shared by the atoms . atom covalently bond with other…

Q: Give the name of each element. (a)    Hg (b)    Nb (c)    P

A: Element name

Q: A student is carrying out a biological preparation that requires 1 M NaCl tomaintain an ionic…

A: Substituting Sodium Chloride with Ammonium Sulphate will change the results drastically.  The…

Q: Q.3. Find the equilibrium number of vacancies in 1m3 of Cu at 1000 °C. Vacancy formation energy per…

A: Number of vacancies are calculated as

Q: An isolated LiCl molecule has its chloride ion (mass = 35 atomic mass units) at x = 0 pm , and its…

A: Correct option is (c) 42 u .

Q: Chromium is BCC crystal structure and has atomic weight of 52.0 g/mol and density of 7.19…

A:

Q: Sketch the atomic structure of silicon and insert an impurity of arsenic as demonstrated for…

A:

Q: The metal molybdenum becomes superconducting at temperatures below 0.90 K. Calculate the temperature…

A:

Q: may I ask why it's not mgsinteta??

A:

The Bohr model

Students often get confused between Rutherford’s model and Bohr model of an atom. They interpret the postulates of both these models to be the same, which is incorrect. Rutherford’s model differs from Bohr’s model in the following ways: