Question

Names of simple positive ions (cations) are derived from those of their parent elements and simply add the word ion. For example, when a sodium atom loses an electron, it becomes a sodium ion (Na⁺). A magnesium atom (Mg), on losing two electrons, becomes a magnesium ion (Mg²+). When a metal can form more than one ion, the charges on the different ions are denoted by Roman numerals in parentheses.

For example, Fe²+ is iron(II) ion and Fe³+ is iron(III) ion. Using this information, write the symbol for the following ion:
Vanadium(V)
Enter the chemical symbol of the ion.
a) V⁵+
b) V⁴+
c) V³+
d) V²+

Answer 1

a) V⁵+

The chemical symbol for a vanadium ion with a +5 charge is V⁵⁺, which is referred to as vanadium(V) following the Stock system of ion naming.

Step-by-step explanation:

Naming cations associated with elements that can form more than one positive ion involves using the element's name followed by the charge of the ion in Roman numerals in parentheses.

So, in the case of the vanadium ion with a charge of five plus, the correct notation would be vanadium(V), which corresponds to the symbol V⁵⁺.

This follows the Stock system for naming ions, where the ion's charge is indicated by a Roman numeral following the element's name.