Expanded Octet

_________ are observed only for elements that exist in period 3 or greater.

• Free Radicals

• Complete Octet

• Incomplete Octet

• Expanded Octet

Which of the following elements can have an expanded octet?

• Carbon

• Oxygen

• Sulfur

• Nitrogen

What is the maximum number of electrons that can be accommodated in an expanded octet?

• 8

• 10

• 12

• 14

In which of the following molecules does the central atom have an expanded octet?

Tags

NGSS.HS-PS1-1

Expanded octets are typically observed in which type of elements?

• Transition metals

• Alkali metals

• Nonmetals in period 3 or higher

• Noble gases

Which of the following compounds is an example of a molecule with an expanded octet?

Tags

NGSS.HS-PS1-3

What is the primary reason some elements can have expanded octets?

• Presence of d-orbitals

• High electronegativity

• Low atomic number

• Small atomic radius

Which of the following statements is true about expanded octets?

• They occur in all elements

• They are only possible in period 2 elements

• They involve more than 8 electrons around the central atom

• They are common in noble gases

Tags

NGSS.HS-PS1-1

• 8

• 10

• 12

• 14

Tags

NGSS.HS-PS1-1

Which of the following elements is least likely to form an expanded octet?

• Phosphorus

• Sulfur

• Chlorine

• Fluorine