Readers ask: When A Central Atom Has An Expanded Octet, What Geometry Might The Species Exhibit?

When a central atom has an expanded octet, what geometric shape might the species exhibit? The answer is see saw shape. When an atom has more than 8 valence electrons, then the atom is said to be octet. So, a see saw structure is the best possible shape the species may exhibit.

When a central atom has an expanded octet what geometric shape might the species exhibit?

To have an expanded octet, the central atom must have at least 5 electron groups around it (10 e). Therefore, when a central atom has an expanded octet, the geometric shape the species might exhibit is A) Seesaw.

Which species has a central atom with an expanded octet?

Sulfur, phosphorus, silicon, and chlorine are common examples of elements that form an expanded octet. Phosphorus pentachloride (PCl5) and sulfur hexafluoride (SF6) are examples of molecules that deviate from the octet rule by having more than 8 electrons around the central atom.

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How do you tell if a central atom has an expanded octet?

The central atom can have an expanded octet if it appears in Group 3 or below. Their d-orbitals allow for bonding beyond 8 e-. There are also other exceptions to the octect rule, like Group 13 elements, H, He, Li, and Be.

Can you exhibit an expanded octet?

The octet rule can be ‘expanded’ by some elements by utilizing the d- orbitals found in the third principal energy level and beyond. Sulfur, phosphorus, silicon, and chlorine are common examples of elements that form an expanded octet.

Which of the following is an example of expanded octet?

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

Which characteristics is needed for an atom to have an expanded octet?

Some atoms are exceptions to the octet rule by having an expanded octet. Which characteristic is needed for an atom to have an expanded octet? The atom has empty d-orbitals. How many valence electrons are available for bonding in silicon?

Which atoms would have an expanded 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.

Which of the following molecules contains an atom with an expanded octet?

(1 bond × 2 e) + (3 lone pairs × 2 e) = 8 electrons. (2 bonds × 2 e) + (3 lone pairs × 2 e) = 10 electrons. This is more than 8 which means chlorine has an expanded octet.

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Does the central atom have an octet?

While most atoms obey the duet and octet rules, there are some exceptions. In contrast, many elements in the third-row and beyond have been observed to exceed the octet rule, forming compounds in which the central atom is surrounded by more than eight electrons (e.g. ICl₄⁻ or PF₅). Created by Sal Khan.

When can a central atom exceed the octet rule?

Atoms of the second period cannot have more than eight valence electrons around the central atom. However, atoms of the third period and beyond are capable of exceeding the octet rule by having more than eight electrons around the central atom.

Is SF6 expanded octet?

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

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.

What group of elements has a full octet?

The Group 8A elements have a full octet of eight valence electrons in their highest-energy orbitals (ns2np6), so these elements have very little tendency to gain or lose electrons to form ions, or share electrons with other elements in covalent bonds.

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