# Atomic Physics Questions and Solutions - Expert Help Available

Recent questions in Atomic Physics
Mia Pitts 2023-02-26

## The ground state energy of hydrogen atom is -13.6 eV. What are thekinetic and potential energies of the electron in this state?

tirria0ox 2023-02-09

## Is atomic mass the sum of the number or mass of protons and neutrons.If it is sum of number , then why is it called atomic MASSAnd if it is sum of mass then how do we know the no of neutrons and proton sin the atom.

liachta6VW 2022-12-04

## Which is the smallest unit of matter? Atom or particle?

TunaIeu 2022-12-03

## Two different gases can have the same emission spectrum. True or False

Frances Pham 2022-11-11

## Hydrogen contains electron of n=1, Balmer Series requires electrons to jump from n=2 to n=3,4,5.... and again back to n=2. As n=2 is empty for Hydrogen atom, then how Balmer Series is formed for Hydrogen?

apopiw83 2022-11-04

## Fill the blank spaces for the list of properties of the Electromagnetic waves and EM spectrum: 1) In EM waves, $\stackrel{\to }{E},\stackrel{\to }{B}$ and the wave direction are mutually ____ 2) EM waves travel through space, carry and transfer ____ to the objects. 3) In electromagnetic spectrum,_____ have the lowest wavelength. 4) Of the seven different EM waves, _____ is used for security purposes.

Elise Kelley 2022-10-29

## To keep unwanted light from reflecting from the surface of eyeglasses or other lenses, a thin film of a material with an index of refraction n = 1.38 is coated onto the plastic lens (n = 1.55). What is the thinnest film that will minimize reflection for , the middle of the visible-light spectrum?

Ryder Ferguson 2022-10-29

## Calculate the density of thermionic emission current in Cs at

Antwan Perez 2022-10-22

## ${}^{241}Am$ decays by alpha particle emission. The daughter isotope in this case is (the atomic numbers of Np, Pu, Am, Cm, and Bk are 91, 92, 93, 94, and 95 respectively)${}^{235}Bk$${}^{245}Bk$${}^{239}Np$not given${}^{237}Np$

Pellagra3d 2022-10-19

## A wavelength of is observed in a hydrogen spectrum for a transition that ends in the ${n}_{f}=5$ level. What was ${n}_{i}$ for the initial level of the electron?

Deborah Proctor 2022-10-15

## What are the limiting frequencies and wavelengths for electron emission from sodium and from aluminum?

Ashleigh Clarke 2022-10-15

## Explain why characteristic x rays are the most energetic in the EM emission spectrum of a given element.

Mariyah Bell 2022-10-12

## Show that the entire Paschen series is in the infrared part of the spectrum. To do this, you only need to calculate the shortest wavelength in the series.

Rohan Mcpherson 2022-09-29

## Calculate the energy, in electron volts, of a pho- ton whose frequency is (a) 620 THz, (b) 3.10 GHz, and (c) 46.0 MHz. (ii) Determine the correspond- ing wavelengths for the photons listed in part (i) and (iii) state the classification of each on the electromag- netic spectrum.

Marcus Bass 2022-09-26