An atom of an element X gains two electrons. The symbol of the ion formed is

Assessment: WAEC SSCE - Chemistry - 2013 (Objective) Subject: Chemistry

Question 1 Report

An atom of an element X gains two electrons. The symbol of the ion formed is

Answer Details
When an atom gains electrons, it becomes negatively charged, because electrons have a negative charge. The number of electrons gained is equal to the difference between the number of protons and the number of electrons. In this case, the atom of element X gains two electrons, so its charge will be -2. The symbol for an ion with a charge of -2 is X 2-. Therefore, the correct answer is.
Read lesson note on Atomic Structure And Bonding (JAMB)
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