What is the atomic number of an inert gas?

The inert gas elements have atomic numbers 2, 10, 18, 36, 54, 86 for He, Ne, Ar, Kr, Xe, Rn respectively. The noble gas has the general valence electronic configuration ns2np6Let us discuss the electronic configuration of each inert gas element in group 18. As we know the atomic number of Helium (He) is 2.

What do inert gases have in common?

These gases all have similar properties under standard conditions: they are all odorless, colorless, monatomic gases with very low chemical reactivity. The six noble gases that occur naturally are helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), and Radon (Rn).

Are inert gases single atoms?

It’s one of the inert gases that normally exist as single atoms. Argon–along with helium, neon, xenon, radon, and krypton–belongs to the so-called “noble” gases. Also called inert gases, they have complete outer electron shells and were believed not to react with other elements or compounds.

Are inert gases in the same period?

Explanation: Inert gases lie in Group 18 of the Periodic Table; they possess a FULL VALENCE shell of electrons, and tend to be extremely unreactive. On the Periodic Table, horizontal rows are called Periods, and vertical columns are called Groups. The Noble Gases form an homologous Group.

How many valence electrons does an inert gas have?

Atoms in the same column have the same number of valence electrons. Atoms in the same row have varying numbers of valence electrons, but the number is always 8 or less. The inert gases (blue boxes) always hold 8 valence electrons (He is the exception).

Why are atoms in an inert gas inert?

Lewis postulated that inert gas atoms are chemically inert because they hold 8 valence electrons. The valence electron pattern in these atoms is called an inert gas electron configuration.

Why are the elements of Group 18 called inert gases?

Elements of group 18 are all gases and have completely filled outermost orbital that’s why these elements are highly stable and don’t react with other elements easily. This is the reason these elements are known as inert gases or inert elements. The word inert means chemically unreactive.

Why are noble gases referred to as inert gases?

The name makes an analogy to the term ” noble metals “, which also have low reactivity. The noble gases have also been referred to as inert gases, but this label is deprecated as many noble gas compounds are now known.