Which of the following pairs of atoms and ions are isoelectronic?    Se2−, Br−    Cs+, Xe    Na+, Xe    As3−, Cl−    Cl−, Ar    Ba2+, Cs+

Q: Q1: Explain the electronic distribution of germanium, iron and magnesium if you know that their…

A: Solution to question (1) as per our Company policy:

Q: In the ground state of cadmium, Cd,a. how many electrons have l = 2 as one of their quantum…

A: Given: In the ground state of cadmium, Cd,a. how many electrons have l = 2 as one of their quantum…

Q: The letter standard by ASTM to indicate miscellaneous subjects is O a. E O b. C O c. D O d. A A net…

A: 1) E for miscellaneous subject. option A is correct.

Q: Arrange these diatomic molecules in order of decreasing bond polarity: HCl, NO, F2, HI.

A: As we know the electronegativity of the diatomic molecule. Electronegativity difference of NO=0.4…

Q: Which of the following statements are true? (This question has more than one correct answer) a.…

A: Answers are given under:

Q: 8. An electron has a rest mass of 9.11×10^(-28) g. What is the energy contained in the electron…

A: Mass of electron = m=  9.11 X 10-28 g = 9.11 X 10-31 Kg   Light speed = V = 3 X 108  m/s

Q: This atom arrangement may cause metal brittleness. None of the above Hexagonal closed packed Body…

A: Given

Q: When compression is generated in the crystal lattice, it is because a substitutional atom entered it…

A:

Q: Copper at 500 °C has 1.10×1015 vacancies/cm³. The atomic weight of Cu is 63.55 g/mol and the density…

A:

Q: Predict the formula of the ionic compound formed between the lithium ion and the peroxide ion, O22−.

A: The valency of lithium is one that is it loses one electron to become stable. Therefore by losing…

Q: Explain the tremendous amount of energy associated with the strong bonds within the nucleus of the…

A: The atomic energy available in a nucleus is termed as nuclear energy. This energy is released when…

Q: 14- Which of the following is constant during Atomic Packing Factor (APF) calculation a. All of the…

A: 1) volume of an atom is constant.  2) For a given structure,  number of effective atoms are also…

Q: Which crystal system does not have a 90 degree angle? a) tetragonal b) triclinic c) orthorhombic d)…

A:

Q: The reason that The ionisation energy of an atom is particularly high if the outermost shell is…

A: Ionization energy is the energy required to remove the electron from an outermost shell.

Q: The atomic radii of Mg2+ and F¹ ions are 0.062 nm and 0.112 nm, respectively. Calculate the force of…

A:

Q: In the H atom, what is the correct order (arrangement) of energy levels O3s = 3p =3d 3s>3p>3d

A: in h atom , what is the correct order of  energy level  (c) 3s <3p< 3d is the right answer…

Q: 1.3) State with reason, the type of bonding that occurs in titanium chloride, TiCla.

A: According to terms and conditions of bartleby we can only provide 1st solutions (1.3).

Q: are the basic structural unit in materials. Answers: A, Unit cells B. Space lattices C. Atoms D.…

A:

Q: 2. The following table lists diffraction angles for the first three peaks (first-order) of the x-ray…

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Q: Name the imperfection of crystals when an impurity atom substitutes an original atom.

A:

Q: ubic (b) face-centred cubic (c) close-packed hexagon

A: given: The crystal structure of aluminium is (a) body-centred cubic (b) face-centred cubic (c)…

Q: 2. The following table lists diffraction angles for the first three peaks (first-order) of the x-ray…

A:

Q: Silicon has three naturally-occurring isotopes: 92.23% of 28Si, with an atomic weight of 27.9769…

A: Find :-  Average atomic weight of Si

Q: Which of the following element revolves around the nucleus in an atom a. Neutrons b. Protons  c.…

A: As per given question we have defind solutions  Which of the following element revolves around the…

Q: 5. Which ONE of the following substances is LEAST ionic? a. NaCI b. KCI c. CuCl2 d. SbCl4 6.…

A:

Q: Polarizability is defined as the extent to which the electron cloud surrounding an atom or molecule…

A: The polarizability increases with an increase in size. as the size increases the force between the…

Q: 142) What property does a bonded material with an electron cloud not exhibit? a) Conductivity b)…

A: As per given question we have defind the solution above question

Q: 11) Which of the following is constant during Atomic Packing Factor (APF) calculation a. All of the…

A: Atomic Packing Fraction Atomic packing fraction is defined as the ratio of total volume of atoms per…

Q: The ionic bond is produced by dipole moment of polarized molecules and atoms mutual attraction of…

A: Solution:   Note: Dear Student! As per our guidelines, we are only allowed to answer a single…

Q: 18) In a HCP stucture as the volume of the unit cell increased atomic packing factor increases.…

A: Determine the formula for the atomic packing factor for any given structure. Here N signifies no.…

Q: True False F F Simple cubic where all the atoms are on the corners or vertices of the unit cell. T…

A: Given:  To determine whether the given statements are TRUE or FALSE

Q: Consider the Bragg equation in the x-ray diffraction. If the value of the wavelength is doubled,…

A: Correct option is:

Q: The material in which the atoms are arranged chaotically, is called A)malleable material…

A: (A) Malleable material: A material is considered the malleable material formed very easily by…

Q: When a foreign atom replaces the parent atom in the lattice position is Self Interstitial atom…

A: In a crystal structure of any metal, there exists defects at the atom level. These defects are of 3…

Q: A material science technique used in material science is X-ray diffraction analysis (XRD) to…

A:

Q: The frequency of the middle C note on a piano is 261.63 Hz.261.63 Hz. What is the wavelength of this…

A: Given  The frequency of the middle C note (f) = 261.63 Hz The speed of sound in air (c) = 343.06 m/s…

Q: Chromium (Cr) has the Body-Centered Cubic (BCC) crystal structure. The edge length is a = 0.288 nm.…

A: The linear density is given as : LD=no. of atoms centered on 1 1 1 direction vector length of 1 1 1…

Q: 2.7 Give the electron configurations for the following ions: P*, P³¯, Snª+, Se2-, I¯, and Ni2+.

A: Given, The ions to find their electron configurations are P5+, P3-, Sn4+, Se2-, I- and Ni2+.

Q: What is the dipole moment?  Why dipole-dipole interaction of moleculesis very important phenomena…

A: The bond dipole moment uses the thought of electric dipole minute to degree the polarity of a…

Q: 2- How many coulombs are represented by these amounts of electrons? (a) 6.482 x 1017 (b) 1.24 x 10'8…

A: (a) The number of electrons is . Multiply the number of electrons with the charge of the electron,…

Q: Q: Not considering the many subatomic particles, name the three basic components of which atoms are…

A: The atom of any material have three basic components. protons→Positively chargeelectrons→Negatively…

Q: How does size of atom vary when: a) moving horizontally in periodic table from left to right (same…

A: this problem is based on the periodic table of material and material science.

Q: 2. What is the principle of RAMAN spectroscopy. Why is RAMAN spectroscopy considered a complement to…

A: Raman Spectroscopy is one of the non-destructive chemical analysis technique to know a detailed…

Q: Q1\Consider the following quantum numbers and identify the sub-shell of the electrons : (a) n = 2, 1…

A: Given:

Crystalline Imperfections

The crystalline imperfections are described as the geometrical defects in the crystal due to incorrect arrangement of atoms, impurity, vacancy, and many more. It is not possible to achieve a perfect or ideal crystal, practically.