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
This tells us that argon has a full outer electron shell, making it stable and unreactive. Elements at the end of a period often have filled electron shells, giving them properties different from other elements in the same period.
Magnesium is more reactive with oxygen than argon. Magnesium will react readily with oxygen in the air to form magnesium oxide, while argon is an inert gas and does not typically react with oxygen.
Bromine is the element most like chlorine because they belong to the same group in the periodic table. They have similar chemical properties and react in similar ways with other elements.
Argon is a period 3 element.
Argon is the gas among these. Other elements are solids.
Sulfur and argon do not have similar chemical properties. Sulfur is a reactive nonmetal that readily forms compounds, while argon is an inert gas that is very stable and does not easily react with other elements. Argon is a noble gas with a full outer electron shell, while sulfur is a nonmetal that can gain electrons to achieve a stable configuration.
The normal phrase of the element argon is gas. Argon is a colorless, odorless, and non-reactive gas that is inert under normal conditions.
It is a period 3 element.
Argon is the last element in its period (period 3) because it fills the 3p sublevel, which can hold a maximum of six electrons. After argon, the next element, potassium, begins filling the 4s sublevel in the next period (period 4).
Hydrogen is the most chemically reactive among the elements listed. It readily reacts with other elements to form compounds, while helium, argon, and neon are inert gases and generally do not undergo chemical reactions under normal conditions.
When sulfur forms a negative ion, it gains two electrons to achieve a full outer electron shell, making it have the same electron configuration as argon.