Question

Using the bohrs equation calculate the distance travelled by an electron of hydrogen atom when it jumps from 1st orbit to 2nd orbit?

Answer 1

Explanation:

For Fourth level n=4

For second energy level n=2

energy of fourth energy level

E2=−2.18×10−18(4)2Jatom−1

Energy of second energy level

E1=−2.18×10−18(2)2Jatom−1

DelataE=E2−E1=−2.18×10−18∣∣∣1(4)2−1(2)2∣∣∣Jatom−1

ΔE=4.08×10−18Jatom−1

The energy is given out the from of a single photon or quentum of radiation .Therefore

∴ΔE=hv=hcΔE

∴orλ=6.62×10−34Js×3.0×108ms−14.08×10−19J

=4.86×10−7m=486μm