Sample questions
You've seen the pattern — here are a few of the actual PYQs.
GEO2024
Which one among the following is the correct ground state electronic configuration of Cr atom ?
- A 1s^2 2s^2 2p^6 3s^2 3p^6 3d^4 4s^2
- B 1s^2 2s^2 2p^6 3s^2 3p^6 3d^5 4s^1 ✓
- C 1s^2 2s^2 2p^6 3s^2 3p^6 3d^6 4s^0
- D 1s^2 2s^2 2p^6 3s^2 3p^6 3d^2 4s^2
✓ Correct answer: (B)
Science & Technology › Physics & Chemistry
GEO2023
Which one of the following is the correct electronic configuration of copper?
- A 1s²2s²2p⁶3s²3p⁶3d¹⁰4s¹ ✓
- B 1s²2s²2p⁶3s²3p⁶3d⁹4s²
- C 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²
- D 1s²2s²2p⁶3s²3p⁶3d⁸4s²
✓ Correct answer: (A)
Science & Technology › Physics & Chemistry
GEO2022
What is the maximum number of electrons that can be accommodated in the M shell of an atom?
- A 32
- B 18 ✓
- C 8
- D 2
✓ Correct answer: (B)
Science & Technology › Physics & Chemistry
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