You should be using the label element. There are two ways to use it with a radio button, as shown below.
<form>
<label>
<input type="radio" name="options">
<span>Option 1 - Inside Label</span>
</label>
<br>
<input type="radio" name="options" id="button2">
<label for="button2">
<span>Option 2 - Outside Label</span>
</label>
</form>