The Wurtzite structure exhibited by GaN. The Ga atom is larger than the N atom. www

Q: ) Determine the radius of Al atoms (in pm) if the density of FCC Al is 2.31 g/cm3.[_______] pm

A: FCC stands for the face-centered cubic system in which the atoms are present at the center of the…

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: Fill in the orbital energy diagram for silicon. 3p 3s 2p 2s 1s

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Q: Arrange each of the following sets of atoms and ions, inorder of increasing size: (a) Se2-, Te2-,…

A: The Atomic and Ionic size increases from top to bottom in the group with the increases in number of…

Q: Are metalloids electrical semiconductors? Explain with an example?

A: Are metalloids electrical semiconductors have to be explain with an example,

Q: Draw and explain the photoelectron spectrum of CO.

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Q: Specify the electron configurations for each of the following ions. V3+

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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: Fill in the orbital energy diagram for sodium. 3p A 3s E 2p 2s 1s > > > > >

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Q: How does the structure of a lithium ion vary from that of a lithium atom?

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Q: Chemical Name Chemical Elements LEDS/Bonding Types of Bond Uses in our Formula Involved…

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Q: How does ionisation energy change going down group 2 and why?

A: Ionization Energy: The amount of energy required to remove the loosely held electrons from an…

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: Give the full electron configuration of Be2+.

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Q: Why the ionic radii of Zr and Hf are almost equal?

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Q: Explain the term "electron sea" in terms of metallic bonding and use it explain one of the…

A: Bond between metallic cation with neighbouring metallic cation by the delocalised electrons (sea of…

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

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Q: What is difference between ionization energy and ionization potential. Give 2 examples of each.

A: Ionisation Energy:-It is the energy required to eject an electron from an atom. For eg for Na let…

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: How many electrons does barium have to give up to have the same electron configuration as a Noble…

A: Atomic number of barium is 56. Electronic configuration is given below:

Q: What are the compouds formed by the elements of Group VIIA and VIIB?

A: The elements in the periodic table are arranged in the increasing order of their atomic numbers.…

Q: lustrate the electron spin quantum number of Fluorine

A: Given : We have to write electron spin quantum number of Fluorine.

Q: What amount of energy (kJ) is needed to completely ionize 2.78 mol hydrogen atoms?

A: The value of ionization energy of Hydrogen atom is = 1314 kJ/mol It means for 1 mole of  Hydrogen…

Q: Write the electron configuration for the Br atom and the predicted Br ion.

A: ◆ Electronic Configuration is the distribution of electrons in the energy levels of the atom. The…

Q: (b) List some properties of Group 1 elements which indicate they are all metals. (c) What valence do…

A: Here we have to write some properties of group 1 metal, valency of group 1 elements and name and…

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

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Q: 21. Which of the following does have the lowest polarizability? Z of Br = 35,  I = 53, F = 9,   S =…

A: Z of Br = 35, I = 53, F = 9, S = 16

Q: Give a description of the kinds of ions that are expected to form by group : 1A, 2A, 6A, 7A…

A: According to the long form of periodic table: Group 1 A metals are alkali metals which have general…

Q: Explain why Be and Mg form metallic hydrides instead of ionic hydrides like the other elements in…

A: Be and Mg forms metallic hydrides instead of ionic hydrides and the two possible reasons are their…

Q: Compare the structural arrangements found in CrCl2 and CrCla with the arrangements for WCI2 and…

A: The d block has 4 series which are 3d, 4d, 5d and 6d.The 3d, 4d and 5d series has 10 elements each…

Q: The last orbital of element Y’s electronic configuration is defined by the following set of quantum…

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Q: 37. An element having electronic configuration 1s² 2s² 2p°, 3s², 3p°, 4s' will form- (1) Acidic…

A: Answer; (2) basic oxide.  Potassium element has electronic configuration 1s2 2s2 2p6 3s2 3p6 4s1

Q: Why the ionization energy of noble gases is high? * Because they have a stable configuration Because…

A: The ionization energy of noble gases is high because they have a stable configuration.

Q: Write orbital diagram for V5+

A: The atomic number of V is 23  hence its ground state configuration is [Ar] 3d34s2 Hence V5+ means V…

Q: An element X reacts with F2(g) to form the molecular productshown here. (a) Write a balanced…

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Q: Why is silicon and germanium classified as a semimetal? including electron configurations

A: Silicon and germanium acts as a semiconductor when they are kept at specific conditions.

Q: Valence electrons: A) are the electrons located in the energy shell of highest n quantum number. B)…

A: Valence electrons :

Q: describe the orbitals that make up n=3, describe the orbitals and their energy levels and how they…

A: n is the principal quantum number.  So, n = 3 corresponding to l (azimuthal quantum number) = 2, 1…

Q: Molecules can be paramagnetic or diamagnetic. Which of the following is INCORRECT? a. Mercury:…

A: Note : according to our guidelines we are supposed to answer only one question.kindly repost other…

Q: What is noble gas electron configuration of Zn2+ ?

A: The arrangement of electrons around an atomic nucleus in varying energy levels is termed  as…

Q: Give the valance electron configuration for Niobium.

A: The distribution of the electrons that exists in the atomic orbital of an atom is collectively known…

Q: Elements in Group IA (alkali metals) make nitrides with the formula (X can be any alkali metal). a)…

A: Given,  Group IA Elements (alkali metals) make nitrides with the formula (X can be any alkali metal)…

Q: which of the following does have the lowest polarizability? Z of I=53, F=9. Br=35, Cl=53

A: 1- The polarizability of the atom it's depends on the electronegativity of element.  More…

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: Sulphur reacts with carbon and potassium separately to form compound P and compound Q. (a) Draw an…

A: Sulfur(S) is more electronegative than both carbon(C) and potassium(K).  Hence S accepts electrons…