The x-ray spectrum is for 35.0 keV electrons striking a molybdenum (Z= 42) target. If you substitute a silver (Z = 47) target for the molybdenum target, will (a) lmin, (b) the wavelength for the Ka line, and (c) the wavelength for the Kb line increase, decrease, or remain unchanged?

Q: What is the average radius of the orbit of an electron in the n=2 energy level of an oxygen atom…

A: Given 2nd orbit n=2 Atomic number Z=8

Q: What is the lowest energy level, in electronvolts (eV), of an electron in a one-dimensional atom…

A: The energy level of a one dimensional box is the lowest energy is for n=1.

Q: What is the electron orbit radius of an hydrogen atom in the n = 7 state (in m)?

A:

Q: An photon with wavelength 3.38 nm is emitted when an electron in a one-electron ion transitions from…

A: A one-electron ion is considered as the hydrogen like atom/ion. Therefore, Bohr’s atomic model is…

Q: Assuming that only a single electron is present and a Bohr model, calculate the mean radius, orbital…

A:

Q: what minimum acceleration voltage would be required to produce an x-ray with a wavelength of 70.0 pm

A:

Q: If, in 1 1 Ry %3D - you set ni = 1 and take n2 greater than 1, you generate what is known as the…

A: Given: 1λ=Ry1n12-1n22where, n1=1, n2=2,3,4,...Ry=1.09735×107 /m

Q: a) What is the radius in nm of the electron orbit of a hydrogen atom for n = 4? (b) What is the…

A:

Q: The half-value layer for Tc-99m photons in water is 4.6 cm. Since soft tissue has about the same…

A: Given Data: Half value layer =4.6cm To Find: What percent of the beam passes through 3cm of fat.

Q: 26. The normalized ground state wave function of 2 -rao, where (47) 1/2 do is the Bohr radius. What…

A:

Q: A triply ionized beryllium ion, Be3+ (a beryllium atom with three electrons removed), behaves very…

A: Part (a) The formula to calculate the energy of nth level is, En=-13.6Z2n2 eV Here, En is the energy…

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

A:

Q: Using the Thomson model, estimate the average scatter- ing angle when alpha particles (z = 2) with…

A: As per Thomson's model of the atom, an atom is a positive sphere with electrons embedded in it.…

Q: The Kβ characteristic X-ray line for tungsten has a wavelength of 1.80×10−111.80×10−11 m. What is…

A: Given: wavelength = 1.80 × 10-11 mFind: The energy difference between two energy levels

Q: (a) A hydrogen atom has its electron in the n = 2 level. The radius of the electron's orbit in the…

A:

Q: The NOVA laser at Lawrence Livermore National Lab produces a 40-kJ burst of 3.5 ns duration, with a…

A: given,energy =40kJ=40×103J=2.5×1023eVt=3.5ns=3.5×10-9sλ=351nm

Q: The radius of a cadmium atom is approximately 0.16 nm. What is the ionization energy?

A: Given Data: The radius of a Cadmium atom is, r=0.16 nm   The expression for the nth ionization…

Q: What minimum accelerating voltage would be required to produce an x-ray with a wavelength of 0.0260…

A: Given data The wavelength is given as λ=0.0260 nm.   The mathematical expression to calculate the…

Q: X-ray is produced by bombarding a tungsten target with high energy electrons accelerated by 8.8 kV…

A: The energy of X- rays is:E =-Z2n2E0WHERE E0=13.6eVthe energy of electrons making transition from n=4…

Q: A hydrogen atom in an n=2 state absorbs a photon.What wavelength photons might be emitted by the…

A: The objective of the question is to find the possible wavelengths of photons that might be emitted…

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: