A Level Physics: Energy levels in atoms

[hcybtos]

I did wavelength = h/mv instead of E=hf 😭 I still got the same answer for my final exam but I think I might’ve lost working out marks

[therealspixycat]

How close must be the photon in or to excite the elektron? The number of excited electron is promotional low when the diviation allow is very very small

[kisho]

what are the formulas to calculate the energies of the other 117 chemical elements?

[fgezodt]

Can you make video on stopping potential for aqa

[kisho]

can electron energy be greater than 0, positive?