"Injecting" an element is called DOPING, and silicon doped so that it has extra valence electrons is called n-type. When light shines on n-type silicon the conduction electrons move ; to give them direction, a driving force is needed. *

Q: Titanium is resistant to corrosion because O its surface is coated with titanium oxide it is hard…

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Q: What is the electron configuration of iron? * 1s² 2s² 2p 3p6 3s² 4s² 3d6 O A 1s² 2s ² 2p 3s² 3p6 4s²…

A: Given,  What is the electronic configuration of iron.

Q: 1. Show that the mean velocity of an electron in an electron gas at the absolute zero of temperature…

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Q: Consider the elements Li, K, Cl, C, Ne, and Ar. From thislist, select the element that (a) is most…

A: (a) Electronegativity of the elements increases along the period from left to right and decrease…

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A: Simplest oxides are those in which atoms are in the simplest and single oxidation state. In case of…

Q: Define the properties of metallic atomic solids ?

A: Answer Properties of metallic solid : Some important properties of…

Q: which one of the fellowing elments will be paramagnetic? argon helium zinc sodium berylium

A: Paramagnetic is element in which electrons are not paired.

Q: How does the electron structure of an isolated atom differ from that of a solid material? Select the…

A: The electron structure of an isolated atom differ from that of solid state in the following ways: In…

Q: Describe the periodic trends in radii?

A: Atomic radii increases as we move down the group because effective nuclear charge decreases. So…

Q: Give the complete electron configuration for the two gallium ions.  Do not use the noble gas…

A: The element given is Ga and the ions are Ga+ and Ga+3. The atomic number of element Ga is 31.

Q: It is possible to define metallic character as we do in this bookand base it on the reactivity of…

A: First Ionisation Enthalpy of Silver (Ag) is 731 kJ/mol and that of Manganese (Mn) is 717.4 kJ/mol…

Q: A hypothetical element. Le, has a body centered cubic structure with a density of 6.57 g/cm,…

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Q: Which element, W or Au, has the greater number of electrons in antibondingorbitals?

A: Atomic number of tungsten (W) is 74 and atomic number of Gold (Au) is 79. So, Au has more electrons…

Q: How many valence electrons does Oxygen, Sulfur, Selenium, Tellurium and Polonium have?

A: The term valence electrons refer to the electrons which are present in the outermost shell (also…

Q: Use the following key to classify each of the elements below in its elemental form: C. Metallic…

A: The classification of elements are given below

Q: Each metal has a different energy at which it ejects electrons. At lower energy, electrons are not…

A: Photoelectric effect is defined as the process in which electrons are ejected from the surface of a…

Q: Partial (valence-level) electron configurations for four different ions are shown below: Identify…

A: For a) the charge is +2 So neutral element have 2 more electron. So, the electron configuration of…

Q: What is a tetrahedral hole?

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Q: Consider the elements in Column 15 in the periodic table, with nitrogen at the top (2nd period) and…

A: The elements of group 15 generally dissolve and do not react with water. However there are some…

Q: 19. Consider the table of the first four ionization energies for an element we will call A.…

A: Since you have posted a question with multiple subparts, we will solve the first three subparts for…

Q: List and briefly describe the Earth’s four spheres.

A: The question is based on the concept of environmental Chemistry. we have to describe and explain the…

Q: Calculate the free electron per atom of metal A. The electrical conductivity of metal A is 6.0 × 10²…

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Q: Why does silver not have the expected electron configurations? completely filled orbitals are more…

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Q: hypothetical element, Le, has a body centered cubic structure with a density of 6.12 g/cm3.…

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Q: Elements in Group IIA (alkali earth metals) make oxides with the formula (X can be any alkali earth…

A: Given, X is an alkali metal then, formula of oxide = ?

Q: Copper (Cu) has a density of 8.93 g/cm3. If a copper sample has an electrical conductivity of 6.3 x…

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Q: For the element work, determine the number of valence electrons, core electrons and if the element…

A: We are given a element called work with symbol Wr having atomic number = 33 and mass number = 81.03…

Q: There is a general trend in the ionization energies that says that the ionization energies increase…

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Q: Lithium shows similarities with magnesium in its chemical behavior. What is the cause of these…

A: Lithium shows similarities with magnesium in its chemical behaviour because they have similar size…

Q: Nitrogen (N), phosphorus (P), and arsenic (As) are three elements that almost universally form ions…

A: Atomic number of N is 7 and represented as 7N. Atomic number of P is 15 and represented as 15P.…

Q: Transition metal X forms X, which has four unpaired electrons. X could be: titanium gallium iron…

A: The element which has partially filled d orbital and is present in group 3 to 11 in the periodic…

Q: Which of the following statements is/are TRUE? Choose all that apply. O Select all that apply Mg has…

A: Electron Affinity - It is the energy released from a neutral atom when an electron is added to it in…

Q: how can you use the periodic table or electron configuration to find out if an element is…

A: All matter can be classified as solid, liquid and gases mainly. In these physical states of matter,…

Q: What makes carbon such a unique element? a. Elemental carbon comes in two forms, diamond, and…

A: Atomic number of carbon is 6.  It's electronic configuration is 1s2,2s2 2p2 Carbon can form four…

Q: Which element in the periodic table has the highest number of allotropic forms?

A: Allotropes are the different structural forms that have different number of same element.  Actually…

Q: Why An inscribed polygon is also called a Frost circle ?

A: In an aromatic ring, frost circle is used to show the energies of molecular orbitals of the…

Q: Using the idea of dobereiner’s triads, what conclusion could have been made about magnesium, had…

A: Dobereiner’s triads : To segregate and group similar elements together  Sir Johanan Wolfgang…

Q: The atomic radii of lanthanides decrease from Ce to Lu, except for Eu and Yb because less electrons…

A: Applying concept of metalic bonding in Eu and Yb.

Q: Fictional, thus not on the periodic table. Lz, a transition metal, forms the compound LzS₂ when…

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Q: Which of the following is not the similar properties shared by the diagonal effect pair of beryllium…

A: Diagonal relationship between Be and Al: Both have tendency to form covalent compounds.e.g…

Q: Based on results of his study of atomic x-ray spectra, Moseley discovered a relationship that…

A: The elements present on the earth are tabulated in a table form known as periodic table. The…

Q: 4. Which of these two metals will have a higher melting point? Explain your choice. Na and Al

A: Al has higher melting point than Na.  Metallic lattice of sodium is weak than Aluminium.

Q: Question attached

A: Across period-3, variation is melting point and boiling point is not uniform.

Q: A 330 KJ/mol is the sublimation energy of aluminum, and its atomic radius is 118 pm. Discuss…

A: Do decahedron has only 12 faces but they are Pentagons.  Icosahedron has only 20 triangular Faces.…

Q: 6. A hypothetical metal has the BCC crystal structure, a density of 7.24 g/cm, and an atomic weight…

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Q: 8. A 330 KJ/mol is the sublimation energy of aluminum, and its atomic radius is 118 pm. Discuss…

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