Which metal does not require to have its charge specified in the names of ionic compounds it forms?

Name: Which metal does not require to have its charge specified in the names of ionic compounds it forms?
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Question

Quizplus · Accepted Answer

Calcium (Ca) is an alkaline earth metal and always forms a 2+ cation, so its charge does not need to be specified in the names of ionic compounds it forms. Copper (Cu), iron (Fe), lead (Pb), and manganese (Mn) can form multiple ions and therefore the charge must be specified.

Which Metal Does Not Require to Have Its Charge Specified