Atomic Structure Question 309
Question: The configuration $ 1s^{2},,2s^{2}2p^{5},,3s^{1} $ shows [Pb. PMT 2002]
Options:
A) Excited state of $ O_2^{-} $
B) Excited state of neon
C) Excited state of fluorine
D) Ground state of fluorine atom
Show Answer
Answer:
Correct Answer: B
Solution:
The ground state of neon is $ 1s^{2}2s^{2}2p^{6} $ on excitation an electron from $ 2p $ jumps to $ 3s $ orbital. The excited neon configuration is $ 1s^{2}2s^{2}2p^{5}3s^{1} $ .
