1.

Whichof the following is the energy of a possible excited state of hydrogen?

Answer»

`+13.6eV`
`-6.8eV`
`-3.4eV`
`+638eV`

Solution :ENERGY of excited state is negative and corresponds to n more THAN1 for hydrogen.
`E=-(13.6Z^(2))/(n^(2))eV`
Z=1, FIRST excited state n=2
`:.E=-3.6/(2^(2))=-3.4eV`


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