Multiple radio button groups in one form

Question

Is it possible to have multiple radio button groups in a single form? Usually selecting one button deselects the previous, I just need to have one of a group deselected.

<form>
    <fieldset id="group1">
        <input type="radio" value="">
        <input type="radio" value="">
    </fieldset>

    <fieldset id="group2">
        <input type="radio" value="">
        <input type="radio" value="">
        <input type="radio" value="">
    </fieldset>
</form>

Answer 1

Set equal name attributes to create a group;

<form>
  <fieldset id="group1">
    <input type="radio" value="value1" name="group1">
    <input type="radio" value="value2" name="group1">
  </fieldset>

  <fieldset id="group2">
    <input type="radio" value="value1" name="group2">
    <input type="radio" value="value2" name="group2">
    <input type="radio" value="value3" name="group2">
  </fieldset>
</form>