JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.4/jquery.min.js"></script>
<input type="radio" name="a"  value="1"><br>
<input type="radio" name="a" value="2"><br>
<input type="radio" name="a"  value="3"><br>
<h6>
separator
</h6>
<input type="radio" name="b" value="4"><br>
<input type="radio" name="b" value="5"><br>
<input type="radio" name="b"  value="6"><br>

JavaScript

function disableRadioBtnSet(){
  if ($('[name="a"]').is(':checked')){
    $('input[name="b"]').attr("disabled",true);
  }else{
    $('input[name="a"]').attr("disabled",true);
  }
}

$("input[name='a']").change(function(){
   disableRadioBtnSet();
});
$("input[name='b']").change(function(){
   disableRadioBtnSet();
});