Home › CBSE Class 12 (Science) › Physics › Atoms › Which of these species has only one electron, li…
Which of these species has only one electron, like hydrogen?
ANeutral helium atom
BDoubly ionised lithium
CSingly ionised lithium
DNeutral lithium atom
Answer & Solution
Correct answer: B. Doubly ionised lithium
Lithium has three electrons, so removing two leaves a single electron around a nucleus of charge +3e.
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