What does the electronic configuration 1s2,2s2,2p5,3s1 indicate?
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a
Ground state of fluorine
b
Excited state of fluorine
c
Excited state of neon
d
Excited state of the O2−, ion
answer is C.
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Detailed Solution
The atomic number of neon is 10. Ground state, Ne(10)−1s2,2s2,2p6 Excited state, Ne (10)−1s2,2s2,2p5,3s1Hence, 1s2,2s2,2p5,3s1 electronic configuration indicates the excited state of neon.