Question

to designate an anion formed when an atom gains one or more electrons, the ending ------ is added to the root name of the element.
options: ite, ide, alkane, ine

Explanation:

The question is about naming anions formed when an atom gains electrons. In chemistry (a subfield of Natural Science), the suffix for a simple anion (formed by a single atom gaining electrons) is "-ide". For example, chloride (Cl⁻), oxide (O²⁻), etc. The other options: "ite" is for oxyanions with less oxygen (e.g., sulfite), "alkane" is a type of hydrocarbon, and "ine" is not a standard anion suffix. So the correct suffix is "ide".

Answer:

ide