In the emission spectrum of hydrogen atom, how many lines can be accounted for all possible electronic transition from $4^{t h}$ excited state within an atom?

10

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20

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15

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5

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Solution

The correct option is B $10$
When electron in $n^{t h}$ state it can be follows $Σ n$ transition
when electron is in excited state
So when electron in $4^{t h}$ state it gives $Σ 4$ lines or $(4 + 3 + 2 + 1 = 10)$ lines

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In the emission spectrum of hydrogen atom, how many lines can be accounted for all possible electronic transition from 4th excited state within an atom?

The correct option is B 10When electron in nth state it can be follows Σn transitionwhen electron is in excited state So when electron in 4th state it gives Σ4 lines or (4+3+2+1=10) lines

In the emission spectrum of hydrogen atom, how many lines can be accounted for all possible electronic transition from $4^{t h}$ excited state within an atom?

The correct option is B $10$
When electron in $n^{t h}$ state it can be follows $Σ n$ transition
when electron is in excited state
So when electron in $4^{t h}$ state it gives $Σ 4$ lines or $(4 + 3 + 2 + 1 = 10)$ lines