If an element gains an electron, will it form a positive ion or a negative ion?

Negative Ion An atom on gaining an extra electron will acquire one unit of negative charge. An atom has equal number of protons and electrons. The total positive charge of protons balance out the total negative charge of electrons.

Atomic & Ionic Radius Trend, Definition, Differences & Chart - Lesson

Chemical Bonding Review Worksheet, PDF, Ionic Bonding

Ions

Table of Ions - What are ions and Types of Ions, Table of ions of Common Elements along with FAQs

How are ions formed?

Ionic Bonding Questions and Revision

Valence electrons and ionic compounds (video)

Chemical Bonding Review Worksheet.doc - Chemical Bonding Review

Chemical Bonding Review Worksheet