It's a noble gas; it doesn't react with much of anything.
Krypton is a noble gas and is generally unreactive. It does not react with most acids, including strong acids. This is because noble gases have a full outer electron shell, making them stable and unlikely to form chemical bonds.
Neither. Both argon and krypton does not react with nitrogen.
Krypton is found in air
Krypton and radon are both noble gases, which means they are typically inert and do not readily react with other elements. However, krypton can form some compounds with fluorine under certain conditions, such as krypton difluoride (KrF2). Radon, being heavier and more stable, has even fewer known compounds and does not react with fluorine under normal conditions. Overall, while krypton may react with fluorine to a limited extent, radon is unlikely to do so.
The question is very confusingly worded (and, in English, ungrammatical). How about I ignore it and just answer the question I feel like answering, which is "What will krypton react with?" Krypton will react with fluorine and oxygen under certain conditions. KrAr+ and KrH+ polyatomic ions have been investigated, and there's some evidence for a KrXe or KrXe+ species. Krypton apparently can also bond with nitrogen or carbon if you start with a krypton-fluorine compound and react it with a cyanide compound at low temperatures. That's pretty much it, so far as is currently known.
Water does not react with krypton, as krypton is a noble gas that is inert and does not readily form chemical compounds with other elements.
Krypton is a noble gas and is generally inert, so it does not react with HCl, water, or NaOH under normal conditions.
no because density increases down a group
You use a cryogenics compressor--a machine that repeatedly compresses, cools and depressurizes air. As the air gets colder and colder, gases will drop out of it. At -191C you will get some krypton--the concentration in air is only one part per million, so you won't get much. (This is why krypton is very expensive.)
Krypton is a noble gas and is generally not considered poisonous to humans. It is not known to react chemically with human tissues and is considered to be non-toxic. However, inhaling large amounts of any gas can displace oxygen in the air and cause asphyxiation.
Gold, Platinum, Argon, Helium, Krypton, Xenon, etc.
Krypton is found in the air on Earth to the extent of about 1ppm