Noble Gases

Chlorine is the most active nonmetal out of argon, chlorine, potassium, and selenium. It belongs to the halogen group, which is known for its high reactivity. Chlorine readily reacts with other elements to form compounds.

Yes, the periodic table has a group of Noble gases. (The last column of the peroidic table.) These elements tend to have no attractive forces because they are neutral. (# of electrons and protons are equal, therefore it's force is 0.)

Noble gases have completely filled orbitals / energy levels. They generally have 8 valence electrons (helium has only 2) and have stable electronic configuration. Hence they are chemically inert and generally donot form compounds under normal conditions.

Other elements have incomplete energy levels and are generally reactive.

To find the number of moles in 6.071 grams of helium, divide the given mass by the molar mass of helium. The molar mass of helium is approximately 4 grams per mole. Therefore, 6.071 grams / 4 grams/mol ≈ 1.52 moles of helium.

The common isotope of Helium ( helium 4 ) contains 4 nucleons - 2 protons and 2 neutrons. Ifyou want to consider the quarks which are believed to make up the nucleons you have 6 up-quarks and 6 down-quarks, for a total of 12. You can't add 12 and 4 to make 16 because that would mean counting the quarks twice. So you have 4 or 12, according to taste. If you want to include gluons or other virtual particles you are on your own. Anyway, a certain Mr.Heisenberg (all right, uncertain) tells us the quicker you can count the more there will be.

Helium is a non-toxic, colorless, odorless, tasteless, and non-flammable gas. It does not contain moisture as it is chemically inert and does not react with other elements to form compounds like water.

The electronic configuration of Ga is 1s22s22p63s23p64s23104p1

Expressed as a noble gas configuration this is

[Ar] 4s2, 3d10, 4p1

Chlorine gains 1 electron to achieve the noble gas electron configuration of argon.

Sulfur gains two electrons to attain a noble gas configuration, which is the electron configuration of argon. This allows sulfur to have a stable octet of electrons in its outer shell and achieve a more stable electron configuration.

No, "xeon" is not another name for "noble gases."

The noble gases are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn), and ununoctium (Uuo). (Ununoctium is not a naturally-occurring element and only a few atoms of it have ever been produced.)

The group 17 non metals, the Halogen Family, is directly beside the Noble Gasses

0.54 grams

1 mol = mass / Mr = mass / 4 (Helium's atomic weight is 4, it is a monoatomic gas)

1 mol = 0.54 / 4 = 0.00135

# of molecules of helium in the balloon = 0.00135 * 6.02 * 10^23

To calculate the amount of helium in the balloon, we need to convert the mass of helium gas to moles using the molar mass of helium. The molar mass of helium is 4 g/mol. So, 0.54 grams of helium is equal to 0.54/4 = 0.135 moles of helium. Finally, we can use Avogadro's principle to convert moles to the number of helium atoms present in the balloon.

4 is the mass number of helium (mass number = number of protons + number of neutrons)

Atoms can attain the same electron configuration as noble gases by either gaining, losing, or sharing electrons to achieve a full outer shell (valence shell) of electrons. This allows the atom to achieve stability similar to the noble gas configuration.

Hydrogen gas is the lightest. With a formula of H2, it has an atomic mass of only half that of helium. It is highly reactive and there isn't much of it just floating around by itself. Plus, because it is so light, it just floats right up out of our atmosphere and into space.

When cobalt and helium combine, it typically forms cobalt hydride. This compound is used in hydrogen storage applications due to its ability to absorb and release hydrogen gas. Helium act as a stabilizer in this compound, enhancing its hydrogen absorption properties.

Dewar's charcoal is used to separate noble gases through a process called fractional distillation. This method takes advantage of the different boiling points of the noble gases to separate them based on their physical properties. As the mixture is heated, the gases with lower boiling points will vaporize first and can be collected separately as they pass through the charcoal.

A sublevel corresponds to s, p, d, f orbitals in electron configurations:

1st shell → 1s (1 sublevel)

2nd shell → 2s, 2p (2 sublevels)

3rd shell → 3s, 3p, 3d (3 sublevels)

4th shell → 4s, 4p, 4d, 4f (4 sublevels)

5th shell → 5s, 5p, 5d, 5f, 5g? Actually, 5g orbitals are not filled in ground-state elements, so we usually consider 5 sublevels as 5s, 5p, 4d, 4f, 5d, etc., depending on filling order.

More practically, the noble gas with electrons filling up to 5 sublevels would be Xenon (Xe).

Xenon’s electron configuration:

Xe: 

1

𝑠

2

2

𝑠

2

2

𝑝

6

3

𝑠

2

3

𝑝

6

3

𝑑

10

4

𝑠

2

4

𝑝

6

4

𝑑

10

5

𝑠

2

5

𝑝

6

Xe: 1s

2

2s

2

2p

6

3s

2

3p

6

3d

10

4s

2

4p

6

4d

10

5s

2

5p

6

Sublevels filled: 1s, 2s, 2p, 3s, 3p, 3d, 4s, 4p, 4d, 5s, 5p → counting distinct types per shell, you see 5 principal sublevels involved (s, p, d, f, …) in its electron configuration.

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Helium doesn't have an abbrevaition but its chemical symbol is He.

Water has no helium (He) atom. Chemically water is H2O and there is no He atom present in water.

The most common ion of neon is neon gas itself, as neon typically exists as a neutral atom due to its full outer electron shell. Neon is a noble gas and does not readily form ions under normal conditions.

Helium is a gas at room temperature and pressure. It only becomes a solid at very low temperatures close to absolute zero.

use this formula, n(He)=m(He)/M(molar mass of He)

=0.255G/4.OO

=0.06375 moles per gram.

1 mole = 6.0 x 1023 atoms

So, 3 mole = 18.0 x 1023 atoms