Which metal is not required to have its charge specified in the names of ionic compounds it forms?Group of answer choicesFeMnCaCu

Understanding the Problem

We need to identify which metal from the given options does not require its charge to be specified in the names of the ionic compounds it forms.

Relevant Concepts

1. Ionic Compounds: In naming ionic compounds, the charge of the metal ion is often specified when the metal can form more than one type of charge (oxidation state).
2. Monovalent Metals: Metals that can only form one type of oxidation state do not require the charge to be specified in the compound's name.

Analysis of Options

1. Fe (Iron): Can have multiple oxidation states (+2 and +3). Charge specification is required.
2. Mn (Manganese): Known for multiple oxidation states (+2, +3, +4, +6, +7). Charge specification is required.
3. Ca (Calcium): Has a fixed oxidation state of +2. Charge specification is not required.
4. Cu (Copper): Can exist in +1 and +2 oxidation states. Charge specification is required.

Verify and Summarize

Among the choices, Calcium (Ca) is the only metal that has a constant oxidation state (+2) and does not require charge specification in its ionic compounds.

Final Answer

Calcium (Ca) is the metal that does not require its charge specified in the names of the ionic compounds it forms.