Regents Chemistry Exam June 2024 Question 3
3 Which change occurs when an electron returns from a higher energy state to a lower energy state?
(1) An ionic compound is formed, and energy is emitted.
(2) An ionic compound is formed, and energy is absorbed.
(3) A specific amount of energy is absorbed.
(4) A specific amount of energy is emitted.
Solution:
When an electron goes from a lower to a higher energy level, it must absorb energy. When an electron returns from a higher energy state to a lower one, it will emit energy. This is not relevant to forming ionic compounds, eliminating choices 1 and 2.
Choice 4 is correct
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