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:
Palladium(II)
Enter the chemical symbol of the ion.
a) Pd²+
b) Pd³+
c) Pd⁴+
d) Pd⁵+

Answer 1

The symbol for the Palladium(II) ion is Pd²+, indicating that it has a 2+ charge.

Step-by-step explanation:

The symbol for the Palladium(II) ion is Pd²+. Palladium is a metal that can form more than one common positive ion (cation), and thus its charge is denoted using Roman numerals in parentheses following the Stock system. Since Palladium(II) signifies a 2+ charge, the correct symbol includes the element's symbol 'Pd' followed by a superscript 2+ to represent the lost electrons and positive charge.