Radio buttons allow users to select a single item from a list.
When to use
When to avoid
Specifications
Label placement
States
Anatomy
1
Label
Should indicate some kind of instruction for selection. If majority of fields are required in a single form, the "Option" label can be toggled on. If majority of fields are optional, the "Required asterisks" should instead be toggled on.
2
Group
A radio group must include two or more items for a proper selection. By default, it's best practice to always have the top radio button in a group selected. For progressive disclosure forms, always display a radio group with no radio items selected.