These are the noble gases, which means that they have valency 0. The noble gases, or inert gases, have a full outer shell of electrons. This means that they have no spontaneous incentive to enter into compounds with other elements or each other. There are extremely few known compounds that include a noble gas. It is true that noble gases are electrically neutral, but then so are all elements unless something is done to them, like very high temperatures or electric discharges. A noble gas in a discharge tube behaves like any other element. If you doubt this, look at a neon sign ! The difference between inert gases and other elements has nothing to do with neutrality of charge. It is quantum mechanical in nature. Any electron orbit will hold only so many electrons; in a filled orbit all the electrons "feel comfortable". If the outer orbit holds one too few to be full, it has a vacancy for one more to get comfortable. If the outer orbit has only one, the loan of one electron to some other atom empties the outer shell, leaving a new outer shell which is full, and thus also comfortable This makes it very easy to understand a molecule like NaCl, common salt. Sodium has one electron in its outer shell and chlorine has seven. When sodium lends an electron to chlorine each atom then has a full outer shell. Since the sodium now has one fewer electron than protons it has a positive charge. The chlorine atom now has a negative charge because it gained an electron; this causes the two atoms to stick tightly together as a molecule of salt. If a noble gas were to lend an electron, or to borrow one, it would not be "comfortable" in a quantum mechanical sense.
there are 8 valence electrons in argon
boron
8
boron
Chlorine
Yes you are correct, potassium being an alkali metal is definitely more reactive than argon which is a noble gas (group 18 element). Potassium reacts violently with just water while argon is very inert and stable, which is why it remains in the atmosphere as a monatomic element.
Yes, iron is more reactive than calcium as iron is a metal and generally metals are more reactive than non-metals and calcium is a non-metal.
Chlorine is very reactive because it is a halogen (Group VII of the Periodic Table) and it does not have a filled outermost energy level. Argon is unreactive because it is a noble gas (Group VIII of the Periodic Table). Its outermost energy level is full.
No. Both helium and argon are chemically inert.
They are both noble gases. Neon is more reactive than Argon because it has a smaller radius, therefore its electrons are closer to the nucleus
Gold. Titanium. Helium. Neon. Argon. Depends on the chemistry you involve it with.
boron
It makes a helium-argon mixture - nothing more, nothing less.
sodium
Argon is a chemically inactive non metal.
Argon is a Non-Reactive Element. Magnesium is a very Reactive Element. Magnesium will react violently when ignited in an Oxygen rich environment.
Argon has a higher mass number which means it has more particles in its nucleus than helium so I would go with argon.
Argon is chemically inert due to the presence of filled orbitals. Chlorine is highly reactive as it requires one more electron to gain octet.
Neither. Both argon and krypton does not react with nitrogen.
Chlorine