What two pieces of evidence allowed the first calculation of me , the mass of the electron?(a) The ratios qe/me and qp/mp .(b) The values of qe and EB .(c) The ratio qe/me and qe .Justify your response.

Q: What is the probability of find ing the electron in a volume of 6.5 pm3 centred on the nucleus in…

A: a) The probability of finding the electron in 6.5 pm3 of hydrogen atom is determined as,

Q: Which of the following equations violates the law of conservation of mass? Select all that apply.…

A: Law of conservation of mass: This law states that the mass of an isolated system can neither created…

Q: a. How many neutrons are in K-41?b. Write the electron configuration for potassium.c. Which is the…

A: The electron, proton, and neutrons are known as the subatomic particles present in the nucleus of an…

Q: Consider the table. Metal Tm (K) ΔHfus (kJ/mol) Tb (K) ΔHvap (kJ/mol) LiLi 454 2.99 1615 134.7 NaNa…

A: ΔHfus. For Na = 2.60 kJ/mol Tm = 371 K ΔHvap. For Na = 89.6 kJ/mol Tb = 1033 K

Q: The first 25 years of the twentieth century were momentousfor the rapid pace of change in…

A: Rutherford’s α particle scattering experiment suggest that most of the mass of atom is concentrated…

Q: Identify the correct ranking of effective nuclear charge between N,O, and C? Why is that?

A: The effective nuclear charge is the net positive charge experienced by an electron in a…

Q: What are the labels on the axes of a mass spectrum? (c) Tomeasure the mass spectrum of an atom, the…

A: b) In a mass spectrum relative abundance or signal intensity is drawn as a function of mass to…

Q: For the hydrogen atom, the relative probability of finding an electron at any single point in an…

A:

Q: Calculate the Reduced mass of Na2 with 23Na isotope in atomic units (me).

A: Isotope can be defined as the species that have same atomic number but have different mass number.

Q: How much energy does it cost to ionize a hydrogen atom that is initially in the n=8 state? State…

A:

Q: 7.62 The quantum-mechanical treatment of the H atom gives the energy, E, of the electron as a…

A:

Q: Select the best answer or answers from the choices given: Which set of terms best describes a…

A: Given choices,    (a) negative charge, massless, in the orbital    (b) positive charge, 1 amu, in…

Q: Particles called muons exist in cosmic rays and can be created in particle accelerators. Muons are…

A: a)

Q: 10. Which of the following does not match the others? 1.68 5 (A) 67.2 3.88 1 1000 100 10 1 AU,…

A: From the graph of number of electrons vs ∆UE, it is clear that the electronic configuration is 2, 2,…

Q: With an aid of a diagram describe an electron ionisation (EI) source used in mass spectrometry.

A:

Q: When an electron in a hydrogen atom is in the n = 3 state, is it on average closer to, farther from,…

A: The distance from the nucleus to an orbit is known as radius of orbit.  The general formula to find…

Q: 1.4 39.6 2.45 1000 100 10 0.1 AU, (MJ/moI) #of electrons

A: Solution :     Photoelectron Spectra is used to remove an electron from any shell in the atom. We…

Q: 2. Define shielding and effective nuclear charge. What is the connection between the two?

A: At the nucleolus positively charged protons are present. Hence, nucleolus attracts the negatively…

Q: Naturally occurring magnesium has the following isotopicabundances: Isotope Abundance (%)…

A:

Q: What is the number of electrons in a 36Kr atom with the quantum number ml = 1?

A: We need to calculate the number of electrons in a 36Kr atom with the quantum number ml = 1. We know…

Q: What is the e/m ratio of an electron?

A: e = charge of an electron, m= mass of electron  J.J.Thomson was able to determine the e/m ratio by…

Q: a ) Eva l u a te t h e expre s s i o n s 2 x 1, 2 x (1 + 3),2 x(1 + 3 + 5), and 2 x (1 + 3 + 5 + 7).…

A: In the expression, the total number of valence electron is calculated in which 2 is the number of…

Q: (Pages 325 - 331). An electron traveling at 4.6x105 m/s has an uncertainty in its velocity of…

A:

Q: An electron moving at 2.90X10T m/s is found 7.04x10- n what is the mass of the to have á wavieleng…

A: The velocity of the electron, v = 2.90×104 m/s Wavelength of the electron, λ = 7.04×10-9 m Mass of…

Q: a. absorption of energy in an ator b. emission of energy by an atom c. absorption of energy in a…

A:

Q: Assuming that a lithium atom is spherical, calculate its volume in cm3. The volume of a sphere is…

A: Here, Diameter of Lithium atom = 104 Å=104 ×10-10m=1.04×10-8m…

Q: In Einstein's photoelectric experiment, the kinetic energy (K.E.) of an electron displaced from a…

A:

Q: Which of the following does have the largest size?

A: In the periodic table,  Top to bottom atomic size increases,  while left to right atomic size…

Q: 2. Determine the energy (in Joules) of light with a frequency of 4.5 x 1010 Hertz. What region of…

A:

Q: The results of a certain scientific measurement are very reproducible. Which one of the following…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 4. ectron moving at 2,9ox10t mls d to hane AX10-9nwhat is Ahe mass electron2 á wauelength Of

A: Given: Velocity of e- , v= 2.9 x 104 m/s Wavelength of electron, λ=7.04 x 10-9 m Alos we know,…

Q: 1. What is the cause of the atomic emission spectrum of an element?

A: Given: To give the causes of atomic emission spectrum of an element

Q: Calculate the mass of the deuteron given that the first line in the Lyman series of 1H lies at 82…

A: Given that, The first line in the Lyman series of 1H lies at 82 259.098 cm−1 whereas that of 2H lies…

Q: As discussed in the A Closer Look box on “Measurement andthe Uncertainty Principle,” the essence of…

A: To measure the position of subatomic particle in atom, the radiation of appropriate energy is used…

Q: Classify the following as either a fermion or a boson: (a) an electron. (b) a proton. (c) a neutron.…

A: Fermions are one of the two fundamental classes of particles. It is explained by Pauli's exclusion…

Q: enerqy of J of on at 3465 m/s. The mass of Colculate the kinetic electron moving ot 3965 m/s.The…

A:

Q: In Einstein's photoelectric experiment, the kinetic energy (K.E.) of an electron displaced from a…

A: Given : Threshold energy of lead = 6.81 X 10-19 J Wavelength of light used = 74.7 nm = 74.7 X 10-9 m…

Q: List the following particles in order of decreasing size: K1+, Ar, S2-, Cl1-, Ca2+   And explain why…

A: order of decreasing size = S-2 > Cl-1 > Ar > K+1 > Ca2+      S-2 Cl-1 Ar K+1 Ca2+…

Q: The negative muon (μ−) behaves like a heavy electron, with the same charge as the electron but with…

A: We have a system consisting of a nucleus of platinum (Pt195 with 78 protons and 117 neutrons) and…

Q: The first years of 20th century were momentous for the rapid pace of change in scientist’s…

A: (1)Rutherford’s α particle scattering experiment suggest that most of the mass of atom is…

Q: What is the spin quantum number, ms, for Uqn-140’s last placed electron?

A:

Q: As discussed in the A Closer Look box on “Measurement andthe Uncertainty Principle,” the essence of…

A: To find: The reason for the inability to measure the position of a subatomic particle without…

Q: Hydra atom initially sn its around state (nei), absods a photon and ends up an etcited state where…

A: When an electron jumps from lower energy level to higher energy level it absorbs energy in the form…

Q: Using the Heisenberg uncertainty principle, calculate Δx for a baseball with Δv = 0.178 m/s. The…

A: According to Heisenberg uncertainty principle, it is impossible to measure simultaneously the…

Q: what would be the speed (v) of the dislodged electron in meters per second?

A: Concept: To calculate the kinetic energy of the dislodged electron first of all we calculate the…

Q: the speed of the electron were 3.6*10^ 9 m/s be the corresponding orbital ? Express your answer…

A: