XML linq need detail info on exception

I am using xml linq on my project. I am dealing with very large xml's for easy understanding purpose I have mentioned small sample xml.

<soap:Envelope xmlns:soap="http://ift.tt/sVJIaE">
<soap:Body>
    <StackOverflowReply xmlns="http://ift.tt/1tLkBXu">
        <processStatus>
            <statusCode1>P</statusCode1>
            <statusCode2>P</statusCode2>
            <statusCode3>P</statusCode3>
            <statusCode4>P</statusCode4>
        </processStatus>
    </StackOverflowReply>
</soap:Body>

Following is C# xml linq

XNamespace x = "http://ift.tt/1tLkBXu";
var result = from StackOverflowReply in XDocument.Parse(Myxml).Descendants(x + "Security_AuthenticateReply")
             select new
             {
                status1 = StackOverflowReply.Element(x + "processStatus").Element(x + "statusCode1").Value,
                status2 = StackOverflowReply.Element(x + "processStatus").Element(x + "statusCode2").Value,
                status3 = StackOverflowReply.Element(x + "processStatus").Element(x + "statusCode3").Value,
                status4 = StackOverflowReply.Element(x + "processStatus").Element(x + "statusCode4").Value,
                status5 = StackOverflowReply.Element(x + "processStatus").Element(x + "statusCode5").Value,
              };

Here I am getting exception like "Object reference not set to an instance of an object.". Because the tag

<statusCode5>

was not in my xml.In this case I want to get detail exception message like "Missing tag statusCode5". Please guide me how to get this message from my exception.