energy is absorbed in the hydrogen atom giving absorption spectra when transition takes place from

Options

A. `n=1ton`'where ' n'`gt1`
B. `n=2 to1`
C. `n'to n`
D. `nton`'`=prop`

Explanation

To solve the question regarding the absorption spectra in a hydrogen atom, we need to understand the transitions between energy levels. Here’s a step-by-step solution:

### Step 1: Understand Energy Levels in Hydrogen Atom
The hydrogen atom has discrete energy levels, denoted by quantum numbers \( n \). The lowest energy level is \( n = 1 \), and higher energy levels are \( n = 2, 3, 4, \ldots \).

**Hint:** Remember that the quantum number \( n \) indicates the energy level of an electron in an atom.

### Step 2: Define Absorption Spectra
Absorption spectra occur when an electron in an atom absorbs energy and transitions from a lower energy level to a higher energy level.

**Hint:** Think about what happens when energy is added to an atom; the electron moves to a higher state.

### Step 3: Identify the Transition for Absorption
For hydrogen, when energy is absorbed, the transition can occur from:
- \( n = 1 \) to \( n = 2 \) (or any \( n > 1 \))
- \( n = 2 \) to \( n = 3 \) (or any \( n > 2 \))
- In general, \( n \) to \( n' \) where \( n' > n \)

**Hint:** Focus on the fact that the electron moves from a lower state (like 1) to a higher state (like 2 or more).

### Step 4: Write the Energy Absorption Equation
The energy absorbed during this transition can be expressed as:
\[ \Delta E = E_{\text{final}} - E_{\text{initial}} \]
Where \( E_{\text{final}} \) is the energy of the higher level and \( E_{\text{initial}} \) is the energy of the lower level.

**Hint:** Recall that energy differences between levels can be calculated using the formula for the energy levels of hydrogen.

### Step 5: Conclusion
In conclusion, the absorption spectra in a hydrogen atom occurs when a transition takes place from \( n = 1 \) to \( n > 1 \), or generally from a lower energy level \( n \) to a higher energy level \( n' \).

**Final Answer:** Energy is absorbed in the hydrogen atom giving absorption spectra when the transition takes place from \( n = 1 \) to \( n > 1 \).

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