What is the frequency of light given off by an electron that loses $4.05 x 10^-19$ J of energy as it moves from the 2nd to the 1st energy level?

take Lithium as one example when Lithium become $Li^+1$ it loses an electron. As$ Lithium_3^7$ The atom has two electron in the first shell like Helium and one electron in...

The first ionization energy generally increases as the increases across a period, with a few exceptions. In the second period the I A ionization is less than the II A....

And we would also expect them to increase in the order...... $"metals"$ $<$ $"non-metals"$ $<$ $"Noble Gases"$. So why? Metals are generally regarded as electron-rich materials, whose are delocalized and...

According to Bohr, the energy level nearest the nucleus, n=1, is the lowest energy shell. Successive shells are higher in energy. Your electron would have to gain energy to be...

The of the $NaH$ molecule will be $3.340 * 10^(13)"s"^(-1)$. When dropping from the second vibrational level to the first, energy will be released, since the second vibrational level...

The inverse relationship that exists between wavelength and frequency is described by the equation $color(blue)( lamda * nu = c)" "$, where $lamda$ - the frequency of...

The energy gained by the electron is equal to the difference in energies of the final and initial states, which must be equal to the energy of the photon that...

$7.33xx10^7"m"$ is not a wavelength in the visible light electromagnetic spectrum. It would be a radio wave because they have the longest wavelengths. Calculate energy. We can still calculate energy...

Using the equation E = h v where E is the energy h is planks constant v is frequency If energy is given then frequency can be determined...

The of $K$ is: $1s^2,2s^2, 2p^6,3s^2,3p^6,4s^1$ An atom will lose electrons from its last or furthest orbital from the nucleus. The furthest orbital in $K$ is $4s$, so the electron...