Android code

[Android Question]

what is wrong with this code
<Button
android:id="@+id/button1"
android:layout_width="500dp"
android:layout_height="60dp"
android:layout_alignLeft="@+id/imageView2"
android:layout_alignParentBottom="true"
android:layout_marginBottom="62dp"
android:text="@string/apartmentDetails"
android:textSize="40sp" />
- Element type "Button" must be followed by either attribute specifications, ">"
or "/>".
- error: Error parsing XML: not well-formed (invalid token)