Chlorine
yes and so is silicon and argon
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.
Ar(argon)
No element has the exact same election arrangement as another element. However ion can have the same election arrangement as another element. For example Chloride (Cl-) has the same configuration as Argon, and Potassium (I) (K+) also has the same configuration as argon.
S for sulfur because the number of protons tells you the atomic number with is 16 and 16 is sulfur. The electrons means it is an ion with two more electrons than protons. The neutrons have no charge but add mass to the element.
yes and so is silicon and argon
Since argon is the last element in its period, it is a noble gas. This means that it has a full outer shell of electrons (specifically a full p orbital), and is not very reactive (at all).
Argon is a Non-Reactive Element. Magnesium is a very Reactive Element. Magnesium will react violently when ignited in an Oxygen rich environment.
Argon is a very stable element, and isn't very reactive.
sulfur and argon
Argon is a period 3 element.
Argon is the gas among these. Other elements are solids.
No. Sulfur is a Group 16 element that reacts readily with many other elements. Argon is a Group 18 element, which means it is a noble gas and typically is unreactive.
It is a period 3 element.
The reason Argon is the last element in its period is that it has the highest atomic number in its period, and that's the way all periods are arranged.
Helium, argon, and neon are noble gases, so the only "reactive" element of the four is hydrogen.
Argon