What element can expand its valence shell?

An atom like phosphorus or sulfur which has more than an octet is said to have expanded its valence shell. This can only occur when the valence shell has enough orbitals to accommodate the extra electrons. For example, in the case of phosphorus, the valence shell has a principal quantum number n = 3.

Can Xe expand its valence shell?

Xenon has d-orbitals, allowing it to store more electrons in its valence shell than atoms without any d-orbitals, like those that are at or come before 4s^2 .

What are valence expanded molecules?

There are certain situations in which a stable molecule can form containing atoms of elements that are capable of existing with an expanded valence shell (forming bonds in a way that there are more than 8 electrons in the valence shell). When this occurs the compound is said to exhibit expanded valence.

What elements Cannot have an expanded octet?

These elements include hydrogen, helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine and neon. Elements that cannot have an expanded octet are: hydrogen, helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine and neon.

Does SF6 have an expanded octet?

There are a total of 48 valence electrons in the Lewis structure for SF6. Note that Sulfur (S) is in Period 3 on the periodic table and can have an expanded octet and is able to have more than 8 valence electrons. For the SF6 Lewis structure there are a total of 12 valence electrons on the Sulfur (S) atom.

Does xenon expand its octet?

Xe does not follow the octet rule. It actually bonds. It will hold more than 8 electrons. Xenon having valence electrons in the 4th energy level, will also have access to the 4d sublevel, thus allowing for more than 8 electrons.

Can bromine expand its octet?

Note that in the Lewis structure for BrF5, Bromine (B) is in Period Four on the periodic table. This means it can hold more than eight valence electrons. This is called an expanded octet.

Which of the following has expanded octet?

PF5, SF6 and H2SO4 are the examples of expanded octet molecules.

Can aluminum have an expanded octet?

Al can not have an expanded octet because only elements Phosphorus and onward can have more than 8 electrons. However, Al is one the exceptions to the octet rule in the case that it can have less than 8 electrons.

Can beryllium have an expanded octet?

Beryllium is an alkaline earth metal and so may be expected to form ionic bonds. … Since beryllium only has two valence electrons, it does not typically attain an octet through sharing of electrons.

Can Argon have an expanded octet?

Argon compounds have been synthesised and have expanded octets. Some researchers argue that the expanded-octet structures of the oxides, oxoacids and oxoanions of the 3p–5p non-metals (e.g. P, As, S, Se, Te, Cl, Br, I and Xe) are more consistent with experimental bond lengths than structures that obey the octet rule.

Why can Sulphur expand its octet?

Since sulfur now has more than 8 electrons, we say that it “expands octet”. Sulfur has one more electron pair in its 3s subshell so it can undergo excitation one more time and place the electron in another empty 3d orbital.

Can nitrogen have an expanded octet?

Atoms with an expanded octet

Phosphorous often has 5 orbitals (10 electrons) and sulfur often has 6 orbitals (12 electrons) because they are in the third period, but nitrogen and oxygen can never have expanded octets because they are in the second period and there is not such thing as a 2d orbital.

Can iodine form compounds with an expanded octet?

Iodine is below Period Two on the periodic table so it can have an expanded octet (hold more than eight valence electrons).

Is NF3 electron deficient?

Answer: Out of the following compounds (A) NF3 is electron deficient. Explanation: N has 6 electrons even after sharing with F (2 less than the octet).