Der ive The fllaiding equation E do dr 4TE. Y -2 (D sin@] 3.

Q: 7.123 One way to estimate the effective charge (Zeff) ofa many-electron atom is to use the equation…

A: Given IE1=1312 kJ/molZeff2n2Zeff=IE1×n21312 kJ/mol Known Values   first ionization energy…

Q: Estimate the amount of energy needed to remove all the electrons from the lithium atom

A: Using Bohr's formula for estimating the amount of energy needed to remove all the electrons from the…

Q: Consider an electron o orbital frequency of the k = 9 x 10° Nm²/c² The frequency, fo -

A: The electrostatic force will act as centripetal force and can be equated to give velocity and…

Q: Why is Visible radiation able to remove electrons from sodium but not from zinc?

A: Photoelectric effect: It states that the when light falls on a metal surface it emits electrons.…

Q: How many electrons can occupy the 3d subshell? (b) Howmany electrons can occupy the n = 2 shell?

A: Given  The Bohr orbit of 3d subshell is n = 3. The shape of the orbital or subshell can be…

Q: A certain element has its outermost electron in a 3p subshell. It has valence +3 because it has…

A: It is given that the element has its outermost electrons in a 3p subshell and has +3 valency.

Q: Asolidinsulatingcylinderofradius,…

A: Given that, Radius of the cylinder =R Charge of the cylinder Q=+3 C 1. An insulating cylinder of…

Q: The nucleus is positive and electrons are negative. Why is there space between them, can't they just…

A: The nucleus is positive and electrons are negative. Why is there space between them, can't they just…

Q: When the principal quantum number is n = 4, how many dif- ferent values of (a) l and (b) me are…

A: (a)The principle quantum number (n),

Q: How many electrons are in a 4d orbital of Zr?

A: Electronic configuration of Kr 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6

Q: A laser with power output 2.0mW at a wavelength 400nm is projected onto a calcium metal. The binding…

A: Given information: Here, P is the power output of the laser, λ is the light’s wavelength and ϕ is…

Q: It is relatively easy to strip the outer elections from a heavy atom like that of uranium (which…

A: YES, It is relatively easy to remove outer electrons from a heavy atom like uranium, but it is very…

Q: If atoms exist, why can’t we see them with visible light?

A:

Q: (a) A hydrogenic atom's energy levels are En--13.6 (b) What is the ionization energy of Li2* (or the…

A: Atomic number  Lithium Li2+ atom is 3.In Li2+ ion the number of outermost shell electron is 1. Hence…

Q: Calculate the ionization energy of doubly ionized litihium Li2+ which has Z=3.

A:

Q: A laser with power output of 2.0mW at a wavelength of 400nm is projected onto a calcium metal. The…

A:

Q: 11.36

A: Energy of UV photon of wavelength λ is the sum of ionization energy IE and the kinetic energy KE of…

Q: Magnesium (12) has an atomic number of 12. What is its electron configuration? O 1s 25 2p?3s²3pt O…

A:

Q: 109Ag 29 34 29 2) Give the electron configuration for the following elements, both the full…

A: According to Aufbau principle, electrons in the ground state of an atom or ion , occupy atomic…

Q: 1. Find the Miller indices for atomic plane A shown in Fig Q1(a). Z a A b

A:

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: Q 7 // Why does the simple Zeeman phenomenon occur in atoms that contain only an even number of…

A:

Q: The diode laser is produced by (15 radiative recombination of electrons ?injected true O False

A: The diode laser is a semiconductor device in which the diode is pumped with the electric current…

Q: An atom of silver has closed 3d and 4d subshells.Which subshell has the greater number of electrons,…

A: Silver has closed 3d and 4d sub shells. This implies both sub shells contain the maximum number of…

Q: The ionization energy for neon (Z=10) is 21.6 eV, and thatfor sodium(Z=11) is 5.1 eV. Explain the…

A: (Z=10) is 21.6 eV and Z = 11 is 5.1 eV

Q: How many possible values of ms can there be in an atom with n = 3?

A:

Q: To obtain the most precise value of BE from the equation BE=[ZM(1H)+ Nmn]c2 − m(AX)c2 , we should…

A:

Q: DIr A = 3i – 4j + 4k, B = 2î + 3j – 7k and C = -4î + 2j + 5k, Find: (a) Ã + B – ċ (b) Ā.B (c) AxB

A:

Q: Consider the following four transitions in ahydrogen atom:(i) ni = 2, nf = 6 (ii) ni = 2, nf =…

A: To determine the longest- and the shortest-wavelength photon, first determine the wavelength of the…

Q: Prove that the radius of Bohr is given by the relation 4πε. h2 ao %3D me2

A: Solution

Q: SECTION 22 2. (a) Find t QCion and answer ch the chlor

A:

Q: How many electrons can occupy (a) the 2p subshell and (b) the3p subshell?

A: In the p shell, there are 3 subshells, and each sub shell contains 2 electrons.

Q: what is the pairity of Blsmuth 2l2? (gr0und state) What is the spin? (The lowest spin, there  may…

A:

Q: Tell how many protons, electrons and neutrons there are in each of the ff. Atoms: a. 12C d. 206Pb b.…

A:

Q: A laser with power output of 2.0 mW at a wavelength of 400 nm is projected onto a Calcium metal. The…

A:

Q: Show that if two equivalent hybrid orbitals of the form spλ make an angle θ to each other, then λ =…

A: Given:-              The two equivalent hybrid orbitals of the form spλ make an angle θ to each…

Q: Miller's indices a1 = 1, az=-1/2

A: Miller Indices are used to specify directions and planes of a crystal or lattice. The number indices…

Q: In a forward biased LED, the recombination of electrons and holes yields photons. This process is…

A: In forward biased LED i.e. in active region when a suitable voltage is applied to LED ,then…

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: