which metal does not require having its charge specified in the names of ionic comppounds it forms?
a. Au
b. Ca
c. Cu
d. Cr
e. Fe
Add Luke to that long list of screen names.
Fe occurs as +3 and +2. Cu as +1 and +2. Cr as +3, +6, +2, and others.
Au occurs as aurous and auric compounds. Does that help?
To determine which metal does not require having its charge specified in the names of ionic compounds it forms, we need to analyze the metals mentioned in the options: Au (gold), Ca (calcium), Cu (copper), Cr (chromium), and Fe (iron).
In ionic compounds, metals can have variable charges, so their charge is often indicated within the name to specify the particular compound. However, some metals have fixed charges regardless of the compounds they form, and as a result, their charge does not need to be specified.
Let's consider each metal and its charge:
a. Au (gold): Gold exhibits variable charges, typically +1 or +3, so its charge needs to be specified.
b. Ca (calcium): Calcium always has a fixed charge of +2, so its charge does not need to be indicated.
c. Cu (copper): Copper can have multiple charges, mainly +1 or +2, so its charge should be specified.
d. Cr (chromium): Chromium can have multiple charges, including +2, +3, or +6, so its charge needs to be mentioned.
e. Fe (iron): Iron can have multiple charges, primarily +2 or +3, so its charge should be specified.
So, among the given options (Au, Ca, Cu, Cr, Fe), the metal that does not require having its charge specified in the names of ionic compounds it forms is:
b. Ca (calcium)