Question

In an atom, when electron jumps from ground state to excited state

• A. no change in energy
• B. energy is emitted
• C. energy is absorbed
• D. depends on atom

Answer 1

The Correct Option is C

To solve this question, we need to understand what happens when an electron in an atom moves from a lower energy level (ground state) to a higher energy level (excited state).

1. Electron Transition in an Atom:
When an electron moves from the ground state (lowest energy level) to an excited state (higher energy level), it must gain energy. This energy is typically supplied by absorbing a photon.

2. Key Concept:
Energy is absorbed by the electron to overcome the energy gap between the ground state and the excited state.

3. Evaluating the Options:

• (1) No change in energy – Incorrect; energy must change to change levels.
• (2) Energy is emitted – Incorrect; energy is emitted when electron falls back to a lower level.
• (3) Energy is absorbed – Correct ✔
• (4) Depends on atom – Incorrect; the process is general across all atoms.

Final Answer:
The correct answer is (C) Energy is absorbed.