For the next six to eight weeks -- or until you're free of pain -- avoid the activity that caused the stress fracture. If you exercise again too soon, you could delay the healing process. You could even cause damage that may never heal properly. When you are ready to return to the activity, do it slowly. If you rush back in, you could re-injure yourself. Very severe stress fractures that won't heal on their own may require surgery.
Best Answer: Krypton is a nonmetal belonging to group 8. All the elements in this group are essentially non reactive and are called the noble gases.est Answer: Krypton is a nonmetal belonging to group 8. All the elements in this group are essentially non reactive and are called the noble gases.
Krypton is present in the air to the extent of about 1 ppm. The atmosphere of Mars has been found to contain 0.3 ppm of krypton. Solid krypton is a white crystalline substance with a face-centered cubic structure which is common to all the rare gases. Properties. It is one of the noble gases. It is characterized by its brilliant green and orange spectral lines. Isotopes. Naturally occurring krypton contains six stable isotopes.