do they have any isotopes?
Yes, it has six isotopes.
Krypton
Naturally occurring krypton in Earth's atmosphere is composed of five stable isotopes, plus one isotope (Kr) with such a long half-life (9.2×10 years) that it can be considered stable. 
where is krypton located on the periodic table UNANSWERABLE how would you describe this element's physical features? A colorless, odorless, and tasteless gas. what is its atomic number? 36. what type of gas is it categorized under? Noble gas. apart from this element, is there any other element that belongs to the above type of gas? Helium, neon , argon, xenon, and the radon. do all of these gases mentioned in the above list occur naturally in nature? Yes, they do. do all of these types of gases occur in the earth's atmosphere? Yes, all except helium. is there any other planet or heavenly body in the solar system where these types of gases can occur? Yes, helium in sun what are the uses of that gas which has atomic number 36? In photography, in making energy efficient fluorescent lamps etc. what are the safety measures one should take while handling this gas? One should be cautious to prevent hypoxia.
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Krypton [SEP] Isotopes
Kr is an inert radioactive noble gas with a half-life of 10.76 years. It is produced by the fission of uranium and plutonium, such as in nuclear bomb testing and nuclear reactors. Kr is released during the reprocessing of fuel rods from nuclear reactors. Concentrations at the North Pole are 30% higher than at the South Pole due to convective mixing.