Answer
Please see the work below.
Work Step by Step
We know that astatine will have the halogen's physical properties, and the reaction is given as follows
$NaAt+H_2SO_4\rightarrow NaHSO_4+HAt$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.