Energy of an electron is given by Wavelength of light required to excite an electron in a hydrogen atom from level n = 1 to n = 2 will be…

Energy of an electron is given by Wavelength of light required to exci

1.	Energy of an electron is given by Wavelength of light required to excite an electron in a hydrogen atom from level n = 1 to n = 2 will be…
Answer» `1.214xx10^(-7)` m `2.186xx10^(-7)` m `6.500 xx10^(-7)` m `8.500 xx10^(-7)` m Solution :`TRIANGLE =hv =(HC)/(lambda)=R_(H)(1)/(n_(i)^(2))-(1)/(n_(f)^(2))` `=(6.26xx10^(-34)xx3xx10^(8))/(2.178xx10^(-18)(0.75))` `=12.169xx10^(-8)` `=12.169xx10^(-7)` m `=1.214 xx10^(-7)` m