QQuestionChemistry
QuestionChemistry
What are the names of the ions Ba^2 +, Sn^2 + , and Se^2−?
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Answer
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Step 1: Recall that ions are formed when atoms gain or lose electrons.
The charge on an ion is equal to the number of electrons lost (for cations) or gained (for anions) subtracted from the neutral atom's charge.
Step 2: The name of an ion is based on its charge and the name of the element it comes from.
For cations (positive ions), the name is the element name followed by the charge written in Roman numerals inside parentheses. For anions (negative ions), the name is the element name with the ending "-ide" added followed by the charge written in Roman numerals inside parentheses.
Final Answer
The names of the ions are Barium(II), Tin(II), and Selenide(II).
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